Alright, let's solve this math problem step by step. First, we have the number 141. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 378. So, we're going to take the number 141 and add it to itself 378 times.
Step 1: 0 + 141 = 141
Step 2: 141 + 141 = 282
Step 3: 282 + 141 = 423
Step 4: 423 + 141 = 564
Step 5: 564 + 141 = 705
Step 6: 705 + 141 = 846
Step 7: 846 + 141 = 987
Step 8: 987 + 141 = 1128
Step 9: 1128 + 141 = 1269
Step 10: 1269 + 141 = 1410
Step 11: 1410 + 141 = 1551
Step 12: 1551 + 141 = 1692
Step 13: 1692 + 141 = 1833
Step 14: 1833 + 141 = 1974
Step 15: 1974 + 141 = 2115
Step 16: 2115 + 141 = 2256
Step 17: 2256 + 141 = 2397
Step 18: 2397 + 141 = 2538
Step 19: 2538 + 141 = 2679
Step 20: 2679 + 141 = 2820
Step 21: 2820 + 141 = 2961
Step 22: 2961 + 141 = 3102
Step 23: 3102 + 141 = 3243
Step 24: 3243 + 141 = 3384
Step 25: 3384 + 141 = 3525
Step 26: 3525 + 141 = 3666
Step 27: 3666 + 141 = 3807
Step 28: 3807 + 141 = 3948
Step 29: 3948 + 141 = 4089
Step 30: 4089 + 141 = 4230
Step 31: 4230 + 141 = 4371
Step 32: 4371 + 141 = 4512
Step 33: 4512 + 141 = 4653
Step 34: 4653 + 141 = 4794
Step 35: 4794 + 141 = 4935
Step 36: 4935 + 141 = 5076
Step 37: 5076 + 141 = 5217
Step 38: 5217 + 141 = 5358
Step 39: 5358 + 141 = 5499
Step 40: 5499 + 141 = 5640
Step 41: 5640 + 141 = 5781
Step 42: 5781 + 141 = 5922
Step 43: 5922 + 141 = 6063
Step 44: 6063 + 141 = 6204
Step 45: 6204 + 141 = 6345
Step 46: 6345 + 141 = 6486
Step 47: 6486 + 141 = 6627
Step 48: 6627 + 141 = 6768
Step 49: 6768 + 141 = 6909
Step 50: 6909 + 141 = 7050
Step 51: 7050 + 141 = 7191
Step 52: 7191 + 141 = 7332
Step 53: 7332 + 141 = 7473
Step 54: 7473 + 141 = 7614
Step 55: 7614 + 141 = 7755
Step 56: 7755 + 141 = 7896
Step 57: 7896 + 141 = 8037
Step 58: 8037 + 141 = 8178
Step 59: 8178 + 141 = 8319
Step 60: 8319 + 141 = 8460
Step 61: 8460 + 141 = 8601
Step 62: 8601 + 141 = 8742
Step 63: 8742 + 141 = 8883
Step 64: 8883 + 141 = 9024
Step 65: 9024 + 141 = 9165
Step 66: 9165 + 141 = 9306
Step 67: 9306 + 141 = 9447
Step 68: 9447 + 141 = 9588
Step 69: 9588 + 141 = 9729
Step 70: 9729 + 141 = 9870
Step 71: 9870 + 141 = 10011
Step 72: 10011 + 141 = 10152
Step 73: 10152 + 141 = 10293
Step 74: 10293 + 141 = 10434
Step 75: 10434 + 141 = 10575
Step 76: 10575 + 141 = 10716
Step 77: 10716 + 141 = 10857
Step 78: 10857 + 141 = 10998
Step 79: 10998 + 141 = 11139
Step 80: 11139 + 141 = 11280
Step 81: 11280 + 141 = 11421
Step 82: 11421 + 141 = 11562
Step 83: 11562 + 141 = 11703
Step 84: 11703 + 141 = 11844
Step 85: 11844 + 141 = 11985
Step 86: 11985 + 141 = 12126
Step 87: 12126 + 141 = 12267
Step 88: 12267 + 141 = 12408
Step 89: 12408 + 141 = 12549
Step 90: 12549 + 141 = 12690
Step 91: 12690 + 141 = 12831
Step 92: 12831 + 141 = 12972
Step 93: 12972 + 141 = 13113
Step 94: 13113 + 141 = 13254
Step 95: 13254 + 141 = 13395
Step 96: 13395 + 141 = 13536
Step 97: 13536 + 141 = 13677
Step 98: 13677 + 141 = 13818
Step 99: 13818 + 141 = 13959
Step 100: 13959 + 141 = 14100
Step 101: 14100 + 141 = 14241
Step 102: 14241 + 141 = 14382
Step 103: 14382 + 141 = 14523
Step 104: 14523 + 141 = 14664
Step 105: 14664 + 141 = 14805
Step 106: 14805 + 141 = 14946
Step 107: 14946 + 141 = 15087
Step 108: 15087 + 141 = 15228
Step 109: 15228 + 141 = 15369
Step 110: 15369 + 141 = 15510
Step 111: 15510 + 141 = 15651
Step 112: 15651 + 141 = 15792
Step 113: 15792 + 141 = 15933
Step 114: 15933 + 141 = 16074
Step 115: 16074 + 141 = 16215
Step 116: 16215 + 141 = 16356
Step 117: 16356 + 141 = 16497
Step 118: 16497 + 141 = 16638
Step 119: 16638 + 141 = 16779
Step 120: 16779 + 141 = 16920
Step 121: 16920 + 141 = 17061
Step 122: 17061 + 141 = 17202
Step 123: 17202 + 141 = 17343
Step 124: 17343 + 141 = 17484
Step 125: 17484 + 141 = 17625
Step 126: 17625 + 141 = 17766
Step 127: 17766 + 141 = 17907
Step 128: 17907 + 141 = 18048
Step 129: 18048 + 141 = 18189
Step 130: 18189 + 141 = 18330
Step 131: 18330 + 141 = 18471
Step 132: 18471 + 141 = 18612
Step 133: 18612 + 141 = 18753
Step 134: 18753 + 141 = 18894
Step 135: 18894 + 141 = 19035
Step 136: 19035 + 141 = 19176
Step 137: 19176 + 141 = 19317
Step 138: 19317 + 141 = 19458
Step 139: 19458 + 141 = 19599
Step 140: 19599 + 141 = 19740
Step 141: 19740 + 141 = 19881
Step 142: 19881 + 141 = 20022
Step 143: 20022 + 141 = 20163
Step 144: 20163 + 141 = 20304
Step 145: 20304 + 141 = 20445
Step 146: 20445 + 141 = 20586
Step 147: 20586 + 141 = 20727
Step 148: 20727 + 141 = 20868
Step 149: 20868 + 141 = 21009
Step 150: 21009 + 141 = 21150
Step 151: 21150 + 141 = 21291
Step 152: 21291 + 141 = 21432
Step 153: 21432 + 141 = 21573
Step 154: 21573 + 141 = 21714
Step 155: 21714 + 141 = 21855
Step 156: 21855 + 141 = 21996
Step 157: 21996 + 141 = 22137
Step 158: 22137 + 141 = 22278
Step 159: 22278 + 141 = 22419
Step 160: 22419 + 141 = 22560
Step 161: 22560 + 141 = 22701
Step 162: 22701 + 141 = 22842
Step 163: 22842 + 141 = 22983
Step 164: 22983 + 141 = 23124
Step 165: 23124 + 141 = 23265
Step 166: 23265 + 141 = 23406
Step 167: 23406 + 141 = 23547
Step 168: 23547 + 141 = 23688
Step 169: 23688 + 141 = 23829
Step 170: 23829 + 141 = 23970
Step 171: 23970 + 141 = 24111
Step 172: 24111 + 141 = 24252
Step 173: 24252 + 141 = 24393
Step 174: 24393 + 141 = 24534
Step 175: 24534 + 141 = 24675
Step 176: 24675 + 141 = 24816
Step 177: 24816 + 141 = 24957
Step 178: 24957 + 141 = 25098
Step 179: 25098 + 141 = 25239
Step 180: 25239 + 141 = 25380
Step 181: 25380 + 141 = 25521
Step 182: 25521 + 141 = 25662
Step 183: 25662 + 141 = 25803
Step 184: 25803 + 141 = 25944
Step 185: 25944 + 141 = 26085
Step 186: 26085 + 141 = 26226
Step 187: 26226 + 141 = 26367
Step 188: 26367 + 141 = 26508
Step 189: 26508 + 141 = 26649
Step 190: 26649 + 141 = 26790
Step 191: 26790 + 141 = 26931
Step 192: 26931 + 141 = 27072
Step 193: 27072 + 141 = 27213
Step 194: 27213 + 141 = 27354
Step 195: 27354 + 141 = 27495
Step 196: 27495 + 141 = 27636
Step 197: 27636 + 141 = 27777
Step 198: 27777 + 141 = 27918
Step 199: 27918 + 141 = 28059
Step 200: 28059 + 141 = 28200
Step 201: 28200 + 141 = 28341
Step 202: 28341 + 141 = 28482
Step 203: 28482 + 141 = 28623
Step 204: 28623 + 141 = 28764
Step 205: 28764 + 141 = 28905
Step 206: 28905 + 141 = 29046
Step 207: 29046 + 141 = 29187
Step 208: 29187 + 141 = 29328
Step 209: 29328 + 141 = 29469
Step 210: 29469 + 141 = 29610
Step 211: 29610 + 141 = 29751
Step 212: 29751 + 141 = 29892
Step 213: 29892 + 141 = 30033
Step 214: 30033 + 141 = 30174
Step 215: 30174 + 141 = 30315
Step 216: 30315 + 141 = 30456
Step 217: 30456 + 141 = 30597
Step 218: 30597 + 141 = 30738
Step 219: 30738 + 141 = 30879
Step 220: 30879 + 141 = 31020
Step 221: 31020 + 141 = 31161
Step 222: 31161 + 141 = 31302
Step 223: 31302 + 141 = 31443
Step 224: 31443 + 141 = 31584
Step 225: 31584 + 141 = 31725
Step 226: 31725 + 141 = 31866
Step 227: 31866 + 141 = 32007
Step 228: 32007 + 141 = 32148
Step 229: 32148 + 141 = 32289
Step 230: 32289 + 141 = 32430
Step 231: 32430 + 141 = 32571
Step 232: 32571 + 141 = 32712
Step 233: 32712 + 141 = 32853
Step 234: 32853 + 141 = 32994
Step 235: 32994 + 141 = 33135
Step 236: 33135 + 141 = 33276
Step 237: 33276 + 141 = 33417
Step 238: 33417 + 141 = 33558
Step 239: 33558 + 141 = 33699
Step 240: 33699 + 141 = 33840
Step 241: 33840 + 141 = 33981
Step 242: 33981 + 141 = 34122
Step 243: 34122 + 141 = 34263
Step 244: 34263 + 141 = 34404
Step 245: 34404 + 141 = 34545
Step 246: 34545 + 141 = 34686
Step 247: 34686 + 141 = 34827
Step 248: 34827 + 141 = 34968
Step 249: 34968 + 141 = 35109
Step 250: 35109 + 141 = 35250
Step 251: 35250 + 141 = 35391
Step 252: 35391 + 141 = 35532
Step 253: 35532 + 141 = 35673
Step 254: 35673 + 141 = 35814
Step 255: 35814 + 141 = 35955
Step 256: 35955 + 141 = 36096
Step 257: 36096 + 141 = 36237
Step 258: 36237 + 141 = 36378
Step 259: 36378 + 141 = 36519
Step 260: 36519 + 141 = 36660
Step 261: 36660 + 141 = 36801
Step 262: 36801 + 141 = 36942
Step 263: 36942 + 141 = 37083
Step 264: 37083 + 141 = 37224
Step 265: 37224 + 141 = 37365
Step 266: 37365 + 141 = 37506
Step 267: 37506 + 141 = 37647
Step 268: 37647 + 141 = 37788
Step 269: 37788 + 141 = 37929
Step 270: 37929 + 141 = 38070
Step 271: 38070 + 141 = 38211
Step 272: 38211 + 141 = 38352
Step 273: 38352 + 141 = 38493
Step 274: 38493 + 141 = 38634
Step 275: 38634 + 141 = 38775
Step 276: 38775 + 141 = 38916
Step 277: 38916 + 141 = 39057
Step 278: 39057 + 141 = 39198
Step 279: 39198 + 141 = 39339
Step 280: 39339 + 141 = 39480
Step 281: 39480 + 141 = 39621
Step 282: 39621 + 141 = 39762
Step 283: 39762 + 141 = 39903
Step 284: 39903 + 141 = 40044
Step 285: 40044 + 141 = 40185
Step 286: 40185 + 141 = 40326
Step 287: 40326 + 141 = 40467
Step 288: 40467 + 141 = 40608
Step 289: 40608 + 141 = 40749
Step 290: 40749 + 141 = 40890
Step 291: 40890 + 141 = 41031
Step 292: 41031 + 141 = 41172
Step 293: 41172 + 141 = 41313
Step 294: 41313 + 141 = 41454
Step 295: 41454 + 141 = 41595
Step 296: 41595 + 141 = 41736
Step 297: 41736 + 141 = 41877
Step 298: 41877 + 141 = 42018
Step 299: 42018 + 141 = 42159
Step 300: 42159 + 141 = 42300
Step 301: 42300 + 141 = 42441
Step 302: 42441 + 141 = 42582
Step 303: 42582 + 141 = 42723
Step 304: 42723 + 141 = 42864
Step 305: 42864 + 141 = 43005
Step 306: 43005 + 141 = 43146
Step 307: 43146 + 141 = 43287
Step 308: 43287 + 141 = 43428
Step 309: 43428 + 141 = 43569
Step 310: 43569 + 141 = 43710
Step 311: 43710 + 141 = 43851
Step 312: 43851 + 141 = 43992
Step 313: 43992 + 141 = 44133
Step 314: 44133 + 141 = 44274
Step 315: 44274 + 141 = 44415
Step 316: 44415 + 141 = 44556
Step 317: 44556 + 141 = 44697
Step 318: 44697 + 141 = 44838
Step 319: 44838 + 141 = 44979
Step 320: 44979 + 141 = 45120
Step 321: 45120 + 141 = 45261
Step 322: 45261 + 141 = 45402
Step 323: 45402 + 141 = 45543
Step 324: 45543 + 141 = 45684
Step 325: 45684 + 141 = 45825
Step 326: 45825 + 141 = 45966
Step 327: 45966 + 141 = 46107
Step 328: 46107 + 141 = 46248
Step 329: 46248 + 141 = 46389
Step 330: 46389 + 141 = 46530
Step 331: 46530 + 141 = 46671
Step 332: 46671 + 141 = 46812
Step 333: 46812 + 141 = 46953
Step 334: 46953 + 141 = 47094
Step 335: 47094 + 141 = 47235
Step 336: 47235 + 141 = 47376
Step 337: 47376 + 141 = 47517
Step 338: 47517 + 141 = 47658
Step 339: 47658 + 141 = 47799
Step 340: 47799 + 141 = 47940
Step 341: 47940 + 141 = 48081
Step 342: 48081 + 141 = 48222
Step 343: 48222 + 141 = 48363
Step 344: 48363 + 141 = 48504
Step 345: 48504 + 141 = 48645
Step 346: 48645 + 141 = 48786
Step 347: 48786 + 141 = 48927
Step 348: 48927 + 141 = 49068
Step 349: 49068 + 141 = 49209
Step 350: 49209 + 141 = 49350
Step 351: 49350 + 141 = 49491
Step 352: 49491 + 141 = 49632
Step 353: 49632 + 141 = 49773
Step 354: 49773 + 141 = 49914
Step 355: 49914 + 141 = 50055
Step 356: 50055 + 141 = 50196
Step 357: 50196 + 141 = 50337
Step 358: 50337 + 141 = 50478
Step 359: 50478 + 141 = 50619
Step 360: 50619 + 141 = 50760
Step 361: 50760 + 141 = 50901
Step 362: 50901 + 141 = 51042
Step 363: 51042 + 141 = 51183
Step 364: 51183 + 141 = 51324
Step 365: 51324 + 141 = 51465
Step 366: 51465 + 141 = 51606
Step 367: 51606 + 141 = 51747
Step 368: 51747 + 141 = 51888
Step 369: 51888 + 141 = 52029
Step 370: 52029 + 141 = 52170
Step 371: 52170 + 141 = 52311
Step 372: 52311 + 141 = 52452
Step 373: 52452 + 141 = 52593
Step 374: 52593 + 141 = 52734
Step 375: 52734 + 141 = 52875
Step 376: 52875 + 141 = 53016
Step 377: 53016 + 141 = 53157
Step 378: 53157 + 141 = 53298

So, 141*378 = 53298