OK, let's work through this together. We're starting with 483 and we're going to multiply it by 142, which means we add 483 to itself 142 times.
Step 1: 0 + 483 = 483
Step 2: 483 + 483 = 966
Step 3: 966 + 483 = 1449
Step 4: 1449 + 483 = 1932
Step 5: 1932 + 483 = 2415
Step 6: 2415 + 483 = 2898
Step 7: 2898 + 483 = 3381
Step 8: 3381 + 483 = 3864
Step 9: 3864 + 483 = 4347
Step 10: 4347 + 483 = 4830
Step 11: 4830 + 483 = 5313
Step 12: 5313 + 483 = 5796
Step 13: 5796 + 483 = 6279
Step 14: 6279 + 483 = 6762
Step 15: 6762 + 483 = 7245
Step 16: 7245 + 483 = 7728
Step 17: 7728 + 483 = 8211
Step 18: 8211 + 483 = 8694
Step 19: 8694 + 483 = 9177
Step 20: 9177 + 483 = 9660
Step 21: 9660 + 483 = 10143
Step 22: 10143 + 483 = 10626
Step 23: 10626 + 483 = 11109
Step 24: 11109 + 483 = 11592
Step 25: 11592 + 483 = 12075
Step 26: 12075 + 483 = 12558
Step 27: 12558 + 483 = 13041
Step 28: 13041 + 483 = 13524
Step 29: 13524 + 483 = 14007
Step 30: 14007 + 483 = 14490
Step 31: 14490 + 483 = 14973
Step 32: 14973 + 483 = 15456
Step 33: 15456 + 483 = 15939
Step 34: 15939 + 483 = 16422
Step 35: 16422 + 483 = 16905
Step 36: 16905 + 483 = 17388
Step 37: 17388 + 483 = 17871
Step 38: 17871 + 483 = 18354
Step 39: 18354 + 483 = 18837
Step 40: 18837 + 483 = 19320
Step 41: 19320 + 483 = 19803
Step 42: 19803 + 483 = 20286
Step 43: 20286 + 483 = 20769
Step 44: 20769 + 483 = 21252
Step 45: 21252 + 483 = 21735
Step 46: 21735 + 483 = 22218
Step 47: 22218 + 483 = 22701
Step 48: 22701 + 483 = 23184
Step 49: 23184 + 483 = 23667
Step 50: 23667 + 483 = 24150
Step 51: 24150 + 483 = 24633
Step 52: 24633 + 483 = 25116
Step 53: 25116 + 483 = 25599
Step 54: 25599 + 483 = 26082
Step 55: 26082 + 483 = 26565
Step 56: 26565 + 483 = 27048
Step 57: 27048 + 483 = 27531
Step 58: 27531 + 483 = 28014
Step 59: 28014 + 483 = 28497
Step 60: 28497 + 483 = 28980
Step 61: 28980 + 483 = 29463
Step 62: 29463 + 483 = 29946
Step 63: 29946 + 483 = 30429
Step 64: 30429 + 483 = 30912
Step 65: 30912 + 483 = 31395
Step 66: 31395 + 483 = 31878
Step 67: 31878 + 483 = 32361
Step 68: 32361 + 483 = 32844
Step 69: 32844 + 483 = 33327
Step 70: 33327 + 483 = 33810
Step 71: 33810 + 483 = 34293
Step 72: 34293 + 483 = 34776
Step 73: 34776 + 483 = 35259
Step 74: 35259 + 483 = 35742
Step 75: 35742 + 483 = 36225
Step 76: 36225 + 483 = 36708
Step 77: 36708 + 483 = 37191
Step 78: 37191 + 483 = 37674
Step 79: 37674 + 483 = 38157
Step 80: 38157 + 483 = 38640
Step 81: 38640 + 483 = 39123
Step 82: 39123 + 483 = 39606
Step 83: 39606 + 483 = 40089
Step 84: 40089 + 483 = 40572
Step 85: 40572 + 483 = 41055
Step 86: 41055 + 483 = 41538
Step 87: 41538 + 483 = 42021
Step 88: 42021 + 483 = 42504
Step 89: 42504 + 483 = 42987
Step 90: 42987 + 483 = 43470
Step 91: 43470 + 483 = 43953
Step 92: 43953 + 483 = 44436
Step 93: 44436 + 483 = 44919
Step 94: 44919 + 483 = 45402
Step 95: 45402 + 483 = 45885
Step 96: 45885 + 483 = 46368
Step 97: 46368 + 483 = 46851
Step 98: 46851 + 483 = 47334
Step 99: 47334 + 483 = 47817
Step 100: 47817 + 483 = 48300
Step 101: 48300 + 483 = 48783
Step 102: 48783 + 483 = 49266
Step 103: 49266 + 483 = 49749
Step 104: 49749 + 483 = 50232
Step 105: 50232 + 483 = 50715
Step 106: 50715 + 483 = 51198
Step 107: 51198 + 483 = 51681
Step 108: 51681 + 483 = 52164
Step 109: 52164 + 483 = 52647
Step 110: 52647 + 483 = 53130
Step 111: 53130 + 483 = 53613
Step 112: 53613 + 483 = 54096
Step 113: 54096 + 483 = 54579
Step 114: 54579 + 483 = 55062
Step 115: 55062 + 483 = 55545
Step 116: 55545 + 483 = 56028
Step 117: 56028 + 483 = 56511
Step 118: 56511 + 483 = 56994
Step 119: 56994 + 483 = 57477
Step 120: 57477 + 483 = 57960
Step 121: 57960 + 483 = 58443
Step 122: 58443 + 483 = 58926
Step 123: 58926 + 483 = 59409
Step 124: 59409 + 483 = 59892
Step 125: 59892 + 483 = 60375
Step 126: 60375 + 483 = 60858
Step 127: 60858 + 483 = 61341
Step 128: 61341 + 483 = 61824
Step 129: 61824 + 483 = 62307
Step 130: 62307 + 483 = 62790
Step 131: 62790 + 483 = 63273
Step 132: 63273 + 483 = 63756
Step 133: 63756 + 483 = 64239
Step 134: 64239 + 483 = 64722
Step 135: 64722 + 483 = 65205
Step 136: 65205 + 483 = 65688
Step 137: 65688 + 483 = 66171
Step 138: 66171 + 483 = 66654
Step 139: 66654 + 483 = 67137
Step 140: 67137 + 483 = 67620
Step 141: 67620 + 483 = 68103
Step 142: 68103 + 483 = 68586

So, 483*142 = 68586