Alright, let's solve this math problem step by step. First, we have the number 509. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 304. So, we're going to take the number 509 and add it to itself 304 times.
Step 1: 0 + 509 = 509
Step 2: 509 + 509 = 1018
Step 3: 1018 + 509 = 1527
Step 4: 1527 + 509 = 2036
Step 5: 2036 + 509 = 2545
Step 6: 2545 + 509 = 3054
Step 7: 3054 + 509 = 3563
Step 8: 3563 + 509 = 4072
Step 9: 4072 + 509 = 4581
Step 10: 4581 + 509 = 5090
Step 11: 5090 + 509 = 5599
Step 12: 5599 + 509 = 6108
Step 13: 6108 + 509 = 6617
Step 14: 6617 + 509 = 7126
Step 15: 7126 + 509 = 7635
Step 16: 7635 + 509 = 8144
Step 17: 8144 + 509 = 8653
Step 18: 8653 + 509 = 9162
Step 19: 9162 + 509 = 9671
Step 20: 9671 + 509 = 10180
Step 21: 10180 + 509 = 10689
Step 22: 10689 + 509 = 11198
Step 23: 11198 + 509 = 11707
Step 24: 11707 + 509 = 12216
Step 25: 12216 + 509 = 12725
Step 26: 12725 + 509 = 13234
Step 27: 13234 + 509 = 13743
Step 28: 13743 + 509 = 14252
Step 29: 14252 + 509 = 14761
Step 30: 14761 + 509 = 15270
Step 31: 15270 + 509 = 15779
Step 32: 15779 + 509 = 16288
Step 33: 16288 + 509 = 16797
Step 34: 16797 + 509 = 17306
Step 35: 17306 + 509 = 17815
Step 36: 17815 + 509 = 18324
Step 37: 18324 + 509 = 18833
Step 38: 18833 + 509 = 19342
Step 39: 19342 + 509 = 19851
Step 40: 19851 + 509 = 20360
Step 41: 20360 + 509 = 20869
Step 42: 20869 + 509 = 21378
Step 43: 21378 + 509 = 21887
Step 44: 21887 + 509 = 22396
Step 45: 22396 + 509 = 22905
Step 46: 22905 + 509 = 23414
Step 47: 23414 + 509 = 23923
Step 48: 23923 + 509 = 24432
Step 49: 24432 + 509 = 24941
Step 50: 24941 + 509 = 25450
Step 51: 25450 + 509 = 25959
Step 52: 25959 + 509 = 26468
Step 53: 26468 + 509 = 26977
Step 54: 26977 + 509 = 27486
Step 55: 27486 + 509 = 27995
Step 56: 27995 + 509 = 28504
Step 57: 28504 + 509 = 29013
Step 58: 29013 + 509 = 29522
Step 59: 29522 + 509 = 30031
Step 60: 30031 + 509 = 30540
Step 61: 30540 + 509 = 31049
Step 62: 31049 + 509 = 31558
Step 63: 31558 + 509 = 32067
Step 64: 32067 + 509 = 32576
Step 65: 32576 + 509 = 33085
Step 66: 33085 + 509 = 33594
Step 67: 33594 + 509 = 34103
Step 68: 34103 + 509 = 34612
Step 69: 34612 + 509 = 35121
Step 70: 35121 + 509 = 35630
Step 71: 35630 + 509 = 36139
Step 72: 36139 + 509 = 36648
Step 73: 36648 + 509 = 37157
Step 74: 37157 + 509 = 37666
Step 75: 37666 + 509 = 38175
Step 76: 38175 + 509 = 38684
Step 77: 38684 + 509 = 39193
Step 78: 39193 + 509 = 39702
Step 79: 39702 + 509 = 40211
Step 80: 40211 + 509 = 40720
Step 81: 40720 + 509 = 41229
Step 82: 41229 + 509 = 41738
Step 83: 41738 + 509 = 42247
Step 84: 42247 + 509 = 42756
Step 85: 42756 + 509 = 43265
Step 86: 43265 + 509 = 43774
Step 87: 43774 + 509 = 44283
Step 88: 44283 + 509 = 44792
Step 89: 44792 + 509 = 45301
Step 90: 45301 + 509 = 45810
Step 91: 45810 + 509 = 46319
Step 92: 46319 + 509 = 46828
Step 93: 46828 + 509 = 47337
Step 94: 47337 + 509 = 47846
Step 95: 47846 + 509 = 48355
Step 96: 48355 + 509 = 48864
Step 97: 48864 + 509 = 49373
Step 98: 49373 + 509 = 49882
Step 99: 49882 + 509 = 50391
Step 100: 50391 + 509 = 50900
Step 101: 50900 + 509 = 51409
Step 102: 51409 + 509 = 51918
Step 103: 51918 + 509 = 52427
Step 104: 52427 + 509 = 52936
Step 105: 52936 + 509 = 53445
Step 106: 53445 + 509 = 53954
Step 107: 53954 + 509 = 54463
Step 108: 54463 + 509 = 54972
Step 109: 54972 + 509 = 55481
Step 110: 55481 + 509 = 55990
Step 111: 55990 + 509 = 56499
Step 112: 56499 + 509 = 57008
Step 113: 57008 + 509 = 57517
Step 114: 57517 + 509 = 58026
Step 115: 58026 + 509 = 58535
Step 116: 58535 + 509 = 59044
Step 117: 59044 + 509 = 59553
Step 118: 59553 + 509 = 60062
Step 119: 60062 + 509 = 60571
Step 120: 60571 + 509 = 61080
Step 121: 61080 + 509 = 61589
Step 122: 61589 + 509 = 62098
Step 123: 62098 + 509 = 62607
Step 124: 62607 + 509 = 63116
Step 125: 63116 + 509 = 63625
Step 126: 63625 + 509 = 64134
Step 127: 64134 + 509 = 64643
Step 128: 64643 + 509 = 65152
Step 129: 65152 + 509 = 65661
Step 130: 65661 + 509 = 66170
Step 131: 66170 + 509 = 66679
Step 132: 66679 + 509 = 67188
Step 133: 67188 + 509 = 67697
Step 134: 67697 + 509 = 68206
Step 135: 68206 + 509 = 68715
Step 136: 68715 + 509 = 69224
Step 137: 69224 + 509 = 69733
Step 138: 69733 + 509 = 70242
Step 139: 70242 + 509 = 70751
Step 140: 70751 + 509 = 71260
Step 141: 71260 + 509 = 71769
Step 142: 71769 + 509 = 72278
Step 143: 72278 + 509 = 72787
Step 144: 72787 + 509 = 73296
Step 145: 73296 + 509 = 73805
Step 146: 73805 + 509 = 74314
Step 147: 74314 + 509 = 74823
Step 148: 74823 + 509 = 75332
Step 149: 75332 + 509 = 75841
Step 150: 75841 + 509 = 76350
Step 151: 76350 + 509 = 76859
Step 152: 76859 + 509 = 77368
Step 153: 77368 + 509 = 77877
Step 154: 77877 + 509 = 78386
Step 155: 78386 + 509 = 78895
Step 156: 78895 + 509 = 79404
Step 157: 79404 + 509 = 79913
Step 158: 79913 + 509 = 80422
Step 159: 80422 + 509 = 80931
Step 160: 80931 + 509 = 81440
Step 161: 81440 + 509 = 81949
Step 162: 81949 + 509 = 82458
Step 163: 82458 + 509 = 82967
Step 164: 82967 + 509 = 83476
Step 165: 83476 + 509 = 83985
Step 166: 83985 + 509 = 84494
Step 167: 84494 + 509 = 85003
Step 168: 85003 + 509 = 85512
Step 169: 85512 + 509 = 86021
Step 170: 86021 + 509 = 86530
Step 171: 86530 + 509 = 87039
Step 172: 87039 + 509 = 87548
Step 173: 87548 + 509 = 88057
Step 174: 88057 + 509 = 88566
Step 175: 88566 + 509 = 89075
Step 176: 89075 + 509 = 89584
Step 177: 89584 + 509 = 90093
Step 178: 90093 + 509 = 90602
Step 179: 90602 + 509 = 91111
Step 180: 91111 + 509 = 91620
Step 181: 91620 + 509 = 92129
Step 182: 92129 + 509 = 92638
Step 183: 92638 + 509 = 93147
Step 184: 93147 + 509 = 93656
Step 185: 93656 + 509 = 94165
Step 186: 94165 + 509 = 94674
Step 187: 94674 + 509 = 95183
Step 188: 95183 + 509 = 95692
Step 189: 95692 + 509 = 96201
Step 190: 96201 + 509 = 96710
Step 191: 96710 + 509 = 97219
Step 192: 97219 + 509 = 97728
Step 193: 97728 + 509 = 98237
Step 194: 98237 + 509 = 98746
Step 195: 98746 + 509 = 99255
Step 196: 99255 + 509 = 99764
Step 197: 99764 + 509 = 100273
Step 198: 100273 + 509 = 100782
Step 199: 100782 + 509 = 101291
Step 200: 101291 + 509 = 101800
Step 201: 101800 + 509 = 102309
Step 202: 102309 + 509 = 102818
Step 203: 102818 + 509 = 103327
Step 204: 103327 + 509 = 103836
Step 205: 103836 + 509 = 104345
Step 206: 104345 + 509 = 104854
Step 207: 104854 + 509 = 105363
Step 208: 105363 + 509 = 105872
Step 209: 105872 + 509 = 106381
Step 210: 106381 + 509 = 106890
Step 211: 106890 + 509 = 107399
Step 212: 107399 + 509 = 107908
Step 213: 107908 + 509 = 108417
Step 214: 108417 + 509 = 108926
Step 215: 108926 + 509 = 109435
Step 216: 109435 + 509 = 109944
Step 217: 109944 + 509 = 110453
Step 218: 110453 + 509 = 110962
Step 219: 110962 + 509 = 111471
Step 220: 111471 + 509 = 111980
Step 221: 111980 + 509 = 112489
Step 222: 112489 + 509 = 112998
Step 223: 112998 + 509 = 113507
Step 224: 113507 + 509 = 114016
Step 225: 114016 + 509 = 114525
Step 226: 114525 + 509 = 115034
Step 227: 115034 + 509 = 115543
Step 228: 115543 + 509 = 116052
Step 229: 116052 + 509 = 116561
Step 230: 116561 + 509 = 117070
Step 231: 117070 + 509 = 117579
Step 232: 117579 + 509 = 118088
Step 233: 118088 + 509 = 118597
Step 234: 118597 + 509 = 119106
Step 235: 119106 + 509 = 119615
Step 236: 119615 + 509 = 120124
Step 237: 120124 + 509 = 120633
Step 238: 120633 + 509 = 121142
Step 239: 121142 + 509 = 121651
Step 240: 121651 + 509 = 122160
Step 241: 122160 + 509 = 122669
Step 242: 122669 + 509 = 123178
Step 243: 123178 + 509 = 123687
Step 244: 123687 + 509 = 124196
Step 245: 124196 + 509 = 124705
Step 246: 124705 + 509 = 125214
Step 247: 125214 + 509 = 125723
Step 248: 125723 + 509 = 126232
Step 249: 126232 + 509 = 126741
Step 250: 126741 + 509 = 127250
Step 251: 127250 + 509 = 127759
Step 252: 127759 + 509 = 128268
Step 253: 128268 + 509 = 128777
Step 254: 128777 + 509 = 129286
Step 255: 129286 + 509 = 129795
Step 256: 129795 + 509 = 130304
Step 257: 130304 + 509 = 130813
Step 258: 130813 + 509 = 131322
Step 259: 131322 + 509 = 131831
Step 260: 131831 + 509 = 132340
Step 261: 132340 + 509 = 132849
Step 262: 132849 + 509 = 133358
Step 263: 133358 + 509 = 133867
Step 264: 133867 + 509 = 134376
Step 265: 134376 + 509 = 134885
Step 266: 134885 + 509 = 135394
Step 267: 135394 + 509 = 135903
Step 268: 135903 + 509 = 136412
Step 269: 136412 + 509 = 136921
Step 270: 136921 + 509 = 137430
Step 271: 137430 + 509 = 137939
Step 272: 137939 + 509 = 138448
Step 273: 138448 + 509 = 138957
Step 274: 138957 + 509 = 139466
Step 275: 139466 + 509 = 139975
Step 276: 139975 + 509 = 140484
Step 277: 140484 + 509 = 140993
Step 278: 140993 + 509 = 141502
Step 279: 141502 + 509 = 142011
Step 280: 142011 + 509 = 142520
Step 281: 142520 + 509 = 143029
Step 282: 143029 + 509 = 143538
Step 283: 143538 + 509 = 144047
Step 284: 144047 + 509 = 144556
Step 285: 144556 + 509 = 145065
Step 286: 145065 + 509 = 145574
Step 287: 145574 + 509 = 146083
Step 288: 146083 + 509 = 146592
Step 289: 146592 + 509 = 147101
Step 290: 147101 + 509 = 147610
Step 291: 147610 + 509 = 148119
Step 292: 148119 + 509 = 148628
Step 293: 148628 + 509 = 149137
Step 294: 149137 + 509 = 149646
Step 295: 149646 + 509 = 150155
Step 296: 150155 + 509 = 150664
Step 297: 150664 + 509 = 151173
Step 298: 151173 + 509 = 151682
Step 299: 151682 + 509 = 152191
Step 300: 152191 + 509 = 152700
Step 301: 152700 + 509 = 153209
Step 302: 153209 + 509 = 153718
Step 303: 153718 + 509 = 154227
Step 304: 154227 + 509 = 154736

So, 509*304 = 154736