OK, let's work through this together. We're starting with 13 and we're going to multiply it by 149, which means we add 13 to itself 149 times.
Step 1: 0 + 13 = 13
Step 2: 13 + 13 = 26
Step 3: 26 + 13 = 39
Step 4: 39 + 13 = 52
Step 5: 52 + 13 = 65
Step 6: 65 + 13 = 78
Step 7: 78 + 13 = 91
Step 8: 91 + 13 = 104
Step 9: 104 + 13 = 117
Step 10: 117 + 13 = 130
Step 11: 130 + 13 = 143
Step 12: 143 + 13 = 156
Step 13: 156 + 13 = 169
Step 14: 169 + 13 = 182
Step 15: 182 + 13 = 195
Step 16: 195 + 13 = 208
Step 17: 208 + 13 = 221
Step 18: 221 + 13 = 234
Step 19: 234 + 13 = 247
Step 20: 247 + 13 = 260
Step 21: 260 + 13 = 273
Step 22: 273 + 13 = 286
Step 23: 286 + 13 = 299
Step 24: 299 + 13 = 312
Step 25: 312 + 13 = 325
Step 26: 325 + 13 = 338
Step 27: 338 + 13 = 351
Step 28: 351 + 13 = 364
Step 29: 364 + 13 = 377
Step 30: 377 + 13 = 390
Step 31: 390 + 13 = 403
Step 32: 403 + 13 = 416
Step 33: 416 + 13 = 429
Step 34: 429 + 13 = 442
Step 35: 442 + 13 = 455
Step 36: 455 + 13 = 468
Step 37: 468 + 13 = 481
Step 38: 481 + 13 = 494
Step 39: 494 + 13 = 507
Step 40: 507 + 13 = 520
Step 41: 520 + 13 = 533
Step 42: 533 + 13 = 546
Step 43: 546 + 13 = 559
Step 44: 559 + 13 = 572
Step 45: 572 + 13 = 585
Step 46: 585 + 13 = 598
Step 47: 598 + 13 = 611
Step 48: 611 + 13 = 624
Step 49: 624 + 13 = 637
Step 50: 637 + 13 = 650
Step 51: 650 + 13 = 663
Step 52: 663 + 13 = 676
Step 53: 676 + 13 = 689
Step 54: 689 + 13 = 702
Step 55: 702 + 13 = 715
Step 56: 715 + 13 = 728
Step 57: 728 + 13 = 741
Step 58: 741 + 13 = 754
Step 59: 754 + 13 = 767
Step 60: 767 + 13 = 780
Step 61: 780 + 13 = 793
Step 62: 793 + 13 = 806
Step 63: 806 + 13 = 819
Step 64: 819 + 13 = 832
Step 65: 832 + 13 = 845
Step 66: 845 + 13 = 858
Step 67: 858 + 13 = 871
Step 68: 871 + 13 = 884
Step 69: 884 + 13 = 897
Step 70: 897 + 13 = 910
Step 71: 910 + 13 = 923
Step 72: 923 + 13 = 936
Step 73: 936 + 13 = 949
Step 74: 949 + 13 = 962
Step 75: 962 + 13 = 975
Step 76: 975 + 13 = 988
Step 77: 988 + 13 = 1001
Step 78: 1001 + 13 = 1014
Step 79: 1014 + 13 = 1027
Step 80: 1027 + 13 = 1040
Step 81: 1040 + 13 = 1053
Step 82: 1053 + 13 = 1066
Step 83: 1066 + 13 = 1079
Step 84: 1079 + 13 = 1092
Step 85: 1092 + 13 = 1105
Step 86: 1105 + 13 = 1118
Step 87: 1118 + 13 = 1131
Step 88: 1131 + 13 = 1144
Step 89: 1144 + 13 = 1157
Step 90: 1157 + 13 = 1170
Step 91: 1170 + 13 = 1183
Step 92: 1183 + 13 = 1196
Step 93: 1196 + 13 = 1209
Step 94: 1209 + 13 = 1222
Step 95: 1222 + 13 = 1235
Step 96: 1235 + 13 = 1248
Step 97: 1248 + 13 = 1261
Step 98: 1261 + 13 = 1274
Step 99: 1274 + 13 = 1287
Step 100: 1287 + 13 = 1300
Step 101: 1300 + 13 = 1313
Step 102: 1313 + 13 = 1326
Step 103: 1326 + 13 = 1339
Step 104: 1339 + 13 = 1352
Step 105: 1352 + 13 = 1365
Step 106: 1365 + 13 = 1378
Step 107: 1378 + 13 = 1391
Step 108: 1391 + 13 = 1404
Step 109: 1404 + 13 = 1417
Step 110: 1417 + 13 = 1430
Step 111: 1430 + 13 = 1443
Step 112: 1443 + 13 = 1456
Step 113: 1456 + 13 = 1469
Step 114: 1469 + 13 = 1482
Step 115: 1482 + 13 = 1495
Step 116: 1495 + 13 = 1508
Step 117: 1508 + 13 = 1521
Step 118: 1521 + 13 = 1534
Step 119: 1534 + 13 = 1547
Step 120: 1547 + 13 = 1560
Step 121: 1560 + 13 = 1573
Step 122: 1573 + 13 = 1586
Step 123: 1586 + 13 = 1599
Step 124: 1599 + 13 = 1612
Step 125: 1612 + 13 = 1625
Step 126: 1625 + 13 = 1638
Step 127: 1638 + 13 = 1651
Step 128: 1651 + 13 = 1664
Step 129: 1664 + 13 = 1677
Step 130: 1677 + 13 = 1690
Step 131: 1690 + 13 = 1703
Step 132: 1703 + 13 = 1716
Step 133: 1716 + 13 = 1729
Step 134: 1729 + 13 = 1742
Step 135: 1742 + 13 = 1755
Step 136: 1755 + 13 = 1768
Step 137: 1768 + 13 = 1781
Step 138: 1781 + 13 = 1794
Step 139: 1794 + 13 = 1807
Step 140: 1807 + 13 = 1820
Step 141: 1820 + 13 = 1833
Step 142: 1833 + 13 = 1846
Step 143: 1846 + 13 = 1859
Step 144: 1859 + 13 = 1872
Step 145: 1872 + 13 = 1885
Step 146: 1885 + 13 = 1898
Step 147: 1898 + 13 = 1911
Step 148: 1911 + 13 = 1924
Step 149: 1924 + 13 = 1937

So, 13*149 = 1937