Alright, let's solve this math problem step by step. First, we have the number 678. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 337. So, we're going to take the number 678 and add it to itself 337 times.
Step 1: 0 + 678 = 678
Step 2: 678 + 678 = 1356
Step 3: 1356 + 678 = 2034
Step 4: 2034 + 678 = 2712
Step 5: 2712 + 678 = 3390
Step 6: 3390 + 678 = 4068
Step 7: 4068 + 678 = 4746
Step 8: 4746 + 678 = 5424
Step 9: 5424 + 678 = 6102
Step 10: 6102 + 678 = 6780
Step 11: 6780 + 678 = 7458
Step 12: 7458 + 678 = 8136
Step 13: 8136 + 678 = 8814
Step 14: 8814 + 678 = 9492
Step 15: 9492 + 678 = 10170
Step 16: 10170 + 678 = 10848
Step 17: 10848 + 678 = 11526
Step 18: 11526 + 678 = 12204
Step 19: 12204 + 678 = 12882
Step 20: 12882 + 678 = 13560
Step 21: 13560 + 678 = 14238
Step 22: 14238 + 678 = 14916
Step 23: 14916 + 678 = 15594
Step 24: 15594 + 678 = 16272
Step 25: 16272 + 678 = 16950
Step 26: 16950 + 678 = 17628
Step 27: 17628 + 678 = 18306
Step 28: 18306 + 678 = 18984
Step 29: 18984 + 678 = 19662
Step 30: 19662 + 678 = 20340
Step 31: 20340 + 678 = 21018
Step 32: 21018 + 678 = 21696
Step 33: 21696 + 678 = 22374
Step 34: 22374 + 678 = 23052
Step 35: 23052 + 678 = 23730
Step 36: 23730 + 678 = 24408
Step 37: 24408 + 678 = 25086
Step 38: 25086 + 678 = 25764
Step 39: 25764 + 678 = 26442
Step 40: 26442 + 678 = 27120
Step 41: 27120 + 678 = 27798
Step 42: 27798 + 678 = 28476
Step 43: 28476 + 678 = 29154
Step 44: 29154 + 678 = 29832
Step 45: 29832 + 678 = 30510
Step 46: 30510 + 678 = 31188
Step 47: 31188 + 678 = 31866
Step 48: 31866 + 678 = 32544
Step 49: 32544 + 678 = 33222
Step 50: 33222 + 678 = 33900
Step 51: 33900 + 678 = 34578
Step 52: 34578 + 678 = 35256
Step 53: 35256 + 678 = 35934
Step 54: 35934 + 678 = 36612
Step 55: 36612 + 678 = 37290
Step 56: 37290 + 678 = 37968
Step 57: 37968 + 678 = 38646
Step 58: 38646 + 678 = 39324
Step 59: 39324 + 678 = 40002
Step 60: 40002 + 678 = 40680
Step 61: 40680 + 678 = 41358
Step 62: 41358 + 678 = 42036
Step 63: 42036 + 678 = 42714
Step 64: 42714 + 678 = 43392
Step 65: 43392 + 678 = 44070
Step 66: 44070 + 678 = 44748
Step 67: 44748 + 678 = 45426
Step 68: 45426 + 678 = 46104
Step 69: 46104 + 678 = 46782
Step 70: 46782 + 678 = 47460
Step 71: 47460 + 678 = 48138
Step 72: 48138 + 678 = 48816
Step 73: 48816 + 678 = 49494
Step 74: 49494 + 678 = 50172
Step 75: 50172 + 678 = 50850
Step 76: 50850 + 678 = 51528
Step 77: 51528 + 678 = 52206
Step 78: 52206 + 678 = 52884
Step 79: 52884 + 678 = 53562
Step 80: 53562 + 678 = 54240
Step 81: 54240 + 678 = 54918
Step 82: 54918 + 678 = 55596
Step 83: 55596 + 678 = 56274
Step 84: 56274 + 678 = 56952
Step 85: 56952 + 678 = 57630
Step 86: 57630 + 678 = 58308
Step 87: 58308 + 678 = 58986
Step 88: 58986 + 678 = 59664
Step 89: 59664 + 678 = 60342
Step 90: 60342 + 678 = 61020
Step 91: 61020 + 678 = 61698
Step 92: 61698 + 678 = 62376
Step 93: 62376 + 678 = 63054
Step 94: 63054 + 678 = 63732
Step 95: 63732 + 678 = 64410
Step 96: 64410 + 678 = 65088
Step 97: 65088 + 678 = 65766
Step 98: 65766 + 678 = 66444
Step 99: 66444 + 678 = 67122
Step 100: 67122 + 678 = 67800
Step 101: 67800 + 678 = 68478
Step 102: 68478 + 678 = 69156
Step 103: 69156 + 678 = 69834
Step 104: 69834 + 678 = 70512
Step 105: 70512 + 678 = 71190
Step 106: 71190 + 678 = 71868
Step 107: 71868 + 678 = 72546
Step 108: 72546 + 678 = 73224
Step 109: 73224 + 678 = 73902
Step 110: 73902 + 678 = 74580
Step 111: 74580 + 678 = 75258
Step 112: 75258 + 678 = 75936
Step 113: 75936 + 678 = 76614
Step 114: 76614 + 678 = 77292
Step 115: 77292 + 678 = 77970
Step 116: 77970 + 678 = 78648
Step 117: 78648 + 678 = 79326
Step 118: 79326 + 678 = 80004
Step 119: 80004 + 678 = 80682
Step 120: 80682 + 678 = 81360
Step 121: 81360 + 678 = 82038
Step 122: 82038 + 678 = 82716
Step 123: 82716 + 678 = 83394
Step 124: 83394 + 678 = 84072
Step 125: 84072 + 678 = 84750
Step 126: 84750 + 678 = 85428
Step 127: 85428 + 678 = 86106
Step 128: 86106 + 678 = 86784
Step 129: 86784 + 678 = 87462
Step 130: 87462 + 678 = 88140
Step 131: 88140 + 678 = 88818
Step 132: 88818 + 678 = 89496
Step 133: 89496 + 678 = 90174
Step 134: 90174 + 678 = 90852
Step 135: 90852 + 678 = 91530
Step 136: 91530 + 678 = 92208
Step 137: 92208 + 678 = 92886
Step 138: 92886 + 678 = 93564
Step 139: 93564 + 678 = 94242
Step 140: 94242 + 678 = 94920
Step 141: 94920 + 678 = 95598
Step 142: 95598 + 678 = 96276
Step 143: 96276 + 678 = 96954
Step 144: 96954 + 678 = 97632
Step 145: 97632 + 678 = 98310
Step 146: 98310 + 678 = 98988
Step 147: 98988 + 678 = 99666
Step 148: 99666 + 678 = 100344
Step 149: 100344 + 678 = 101022
Step 150: 101022 + 678 = 101700
Step 151: 101700 + 678 = 102378
Step 152: 102378 + 678 = 103056
Step 153: 103056 + 678 = 103734
Step 154: 103734 + 678 = 104412
Step 155: 104412 + 678 = 105090
Step 156: 105090 + 678 = 105768
Step 157: 105768 + 678 = 106446
Step 158: 106446 + 678 = 107124
Step 159: 107124 + 678 = 107802
Step 160: 107802 + 678 = 108480
Step 161: 108480 + 678 = 109158
Step 162: 109158 + 678 = 109836
Step 163: 109836 + 678 = 110514
Step 164: 110514 + 678 = 111192
Step 165: 111192 + 678 = 111870
Step 166: 111870 + 678 = 112548
Step 167: 112548 + 678 = 113226
Step 168: 113226 + 678 = 113904
Step 169: 113904 + 678 = 114582
Step 170: 114582 + 678 = 115260
Step 171: 115260 + 678 = 115938
Step 172: 115938 + 678 = 116616
Step 173: 116616 + 678 = 117294
Step 174: 117294 + 678 = 117972
Step 175: 117972 + 678 = 118650
Step 176: 118650 + 678 = 119328
Step 177: 119328 + 678 = 120006
Step 178: 120006 + 678 = 120684
Step 179: 120684 + 678 = 121362
Step 180: 121362 + 678 = 122040
Step 181: 122040 + 678 = 122718
Step 182: 122718 + 678 = 123396
Step 183: 123396 + 678 = 124074
Step 184: 124074 + 678 = 124752
Step 185: 124752 + 678 = 125430
Step 186: 125430 + 678 = 126108
Step 187: 126108 + 678 = 126786
Step 188: 126786 + 678 = 127464
Step 189: 127464 + 678 = 128142
Step 190: 128142 + 678 = 128820
Step 191: 128820 + 678 = 129498
Step 192: 129498 + 678 = 130176
Step 193: 130176 + 678 = 130854
Step 194: 130854 + 678 = 131532
Step 195: 131532 + 678 = 132210
Step 196: 132210 + 678 = 132888
Step 197: 132888 + 678 = 133566
Step 198: 133566 + 678 = 134244
Step 199: 134244 + 678 = 134922
Step 200: 134922 + 678 = 135600
Step 201: 135600 + 678 = 136278
Step 202: 136278 + 678 = 136956
Step 203: 136956 + 678 = 137634
Step 204: 137634 + 678 = 138312
Step 205: 138312 + 678 = 138990
Step 206: 138990 + 678 = 139668
Step 207: 139668 + 678 = 140346
Step 208: 140346 + 678 = 141024
Step 209: 141024 + 678 = 141702
Step 210: 141702 + 678 = 142380
Step 211: 142380 + 678 = 143058
Step 212: 143058 + 678 = 143736
Step 213: 143736 + 678 = 144414
Step 214: 144414 + 678 = 145092
Step 215: 145092 + 678 = 145770
Step 216: 145770 + 678 = 146448
Step 217: 146448 + 678 = 147126
Step 218: 147126 + 678 = 147804
Step 219: 147804 + 678 = 148482
Step 220: 148482 + 678 = 149160
Step 221: 149160 + 678 = 149838
Step 222: 149838 + 678 = 150516
Step 223: 150516 + 678 = 151194
Step 224: 151194 + 678 = 151872
Step 225: 151872 + 678 = 152550
Step 226: 152550 + 678 = 153228
Step 227: 153228 + 678 = 153906
Step 228: 153906 + 678 = 154584
Step 229: 154584 + 678 = 155262
Step 230: 155262 + 678 = 155940
Step 231: 155940 + 678 = 156618
Step 232: 156618 + 678 = 157296
Step 233: 157296 + 678 = 157974
Step 234: 157974 + 678 = 158652
Step 235: 158652 + 678 = 159330
Step 236: 159330 + 678 = 160008
Step 237: 160008 + 678 = 160686
Step 238: 160686 + 678 = 161364
Step 239: 161364 + 678 = 162042
Step 240: 162042 + 678 = 162720
Step 241: 162720 + 678 = 163398
Step 242: 163398 + 678 = 164076
Step 243: 164076 + 678 = 164754
Step 244: 164754 + 678 = 165432
Step 245: 165432 + 678 = 166110
Step 246: 166110 + 678 = 166788
Step 247: 166788 + 678 = 167466
Step 248: 167466 + 678 = 168144
Step 249: 168144 + 678 = 168822
Step 250: 168822 + 678 = 169500
Step 251: 169500 + 678 = 170178
Step 252: 170178 + 678 = 170856
Step 253: 170856 + 678 = 171534
Step 254: 171534 + 678 = 172212
Step 255: 172212 + 678 = 172890
Step 256: 172890 + 678 = 173568
Step 257: 173568 + 678 = 174246
Step 258: 174246 + 678 = 174924
Step 259: 174924 + 678 = 175602
Step 260: 175602 + 678 = 176280
Step 261: 176280 + 678 = 176958
Step 262: 176958 + 678 = 177636
Step 263: 177636 + 678 = 178314
Step 264: 178314 + 678 = 178992
Step 265: 178992 + 678 = 179670
Step 266: 179670 + 678 = 180348
Step 267: 180348 + 678 = 181026
Step 268: 181026 + 678 = 181704
Step 269: 181704 + 678 = 182382
Step 270: 182382 + 678 = 183060
Step 271: 183060 + 678 = 183738
Step 272: 183738 + 678 = 184416
Step 273: 184416 + 678 = 185094
Step 274: 185094 + 678 = 185772
Step 275: 185772 + 678 = 186450
Step 276: 186450 + 678 = 187128
Step 277: 187128 + 678 = 187806
Step 278: 187806 + 678 = 188484
Step 279: 188484 + 678 = 189162
Step 280: 189162 + 678 = 189840
Step 281: 189840 + 678 = 190518
Step 282: 190518 + 678 = 191196
Step 283: 191196 + 678 = 191874
Step 284: 191874 + 678 = 192552
Step 285: 192552 + 678 = 193230
Step 286: 193230 + 678 = 193908
Step 287: 193908 + 678 = 194586
Step 288: 194586 + 678 = 195264
Step 289: 195264 + 678 = 195942
Step 290: 195942 + 678 = 196620
Step 291: 196620 + 678 = 197298
Step 292: 197298 + 678 = 197976
Step 293: 197976 + 678 = 198654
Step 294: 198654 + 678 = 199332
Step 295: 199332 + 678 = 200010
Step 296: 200010 + 678 = 200688
Step 297: 200688 + 678 = 201366
Step 298: 201366 + 678 = 202044
Step 299: 202044 + 678 = 202722
Step 300: 202722 + 678 = 203400
Step 301: 203400 + 678 = 204078
Step 302: 204078 + 678 = 204756
Step 303: 204756 + 678 = 205434
Step 304: 205434 + 678 = 206112
Step 305: 206112 + 678 = 206790
Step 306: 206790 + 678 = 207468
Step 307: 207468 + 678 = 208146
Step 308: 208146 + 678 = 208824
Step 309: 208824 + 678 = 209502
Step 310: 209502 + 678 = 210180
Step 311: 210180 + 678 = 210858
Step 312: 210858 + 678 = 211536
Step 313: 211536 + 678 = 212214
Step 314: 212214 + 678 = 212892
Step 315: 212892 + 678 = 213570
Step 316: 213570 + 678 = 214248
Step 317: 214248 + 678 = 214926
Step 318: 214926 + 678 = 215604
Step 319: 215604 + 678 = 216282
Step 320: 216282 + 678 = 216960
Step 321: 216960 + 678 = 217638
Step 322: 217638 + 678 = 218316
Step 323: 218316 + 678 = 218994
Step 324: 218994 + 678 = 219672
Step 325: 219672 + 678 = 220350
Step 326: 220350 + 678 = 221028
Step 327: 221028 + 678 = 221706
Step 328: 221706 + 678 = 222384
Step 329: 222384 + 678 = 223062
Step 330: 223062 + 678 = 223740
Step 331: 223740 + 678 = 224418
Step 332: 224418 + 678 = 225096
Step 333: 225096 + 678 = 225774
Step 334: 225774 + 678 = 226452
Step 335: 226452 + 678 = 227130
Step 336: 227130 + 678 = 227808
Step 337: 227808 + 678 = 228486

So, 678*337 = 228486