OK, let's crack this. We're given 133 and our task is to multiply it by 142. Essentially, we'll be adding 133 to itself 142 times.
Step 1: 0 + 133 = 133
Step 2: 133 + 133 = 266
Step 3: 266 + 133 = 399
Step 4: 399 + 133 = 532
Step 5: 532 + 133 = 665
Step 6: 665 + 133 = 798
Step 7: 798 + 133 = 931
Step 8: 931 + 133 = 1064
Step 9: 1064 + 133 = 1197
Step 10: 1197 + 133 = 1330
Step 11: 1330 + 133 = 1463
Step 12: 1463 + 133 = 1596
Step 13: 1596 + 133 = 1729
Step 14: 1729 + 133 = 1862
Step 15: 1862 + 133 = 1995
Step 16: 1995 + 133 = 2128
Step 17: 2128 + 133 = 2261
Step 18: 2261 + 133 = 2394
Step 19: 2394 + 133 = 2527
Step 20: 2527 + 133 = 2660
Step 21: 2660 + 133 = 2793
Step 22: 2793 + 133 = 2926
Step 23: 2926 + 133 = 3059
Step 24: 3059 + 133 = 3192
Step 25: 3192 + 133 = 3325
Step 26: 3325 + 133 = 3458
Step 27: 3458 + 133 = 3591
Step 28: 3591 + 133 = 3724
Step 29: 3724 + 133 = 3857
Step 30: 3857 + 133 = 3990
Step 31: 3990 + 133 = 4123
Step 32: 4123 + 133 = 4256
Step 33: 4256 + 133 = 4389
Step 34: 4389 + 133 = 4522
Step 35: 4522 + 133 = 4655
Step 36: 4655 + 133 = 4788
Step 37: 4788 + 133 = 4921
Step 38: 4921 + 133 = 5054
Step 39: 5054 + 133 = 5187
Step 40: 5187 + 133 = 5320
Step 41: 5320 + 133 = 5453
Step 42: 5453 + 133 = 5586
Step 43: 5586 + 133 = 5719
Step 44: 5719 + 133 = 5852
Step 45: 5852 + 133 = 5985
Step 46: 5985 + 133 = 6118
Step 47: 6118 + 133 = 6251
Step 48: 6251 + 133 = 6384
Step 49: 6384 + 133 = 6517
Step 50: 6517 + 133 = 6650
Step 51: 6650 + 133 = 6783
Step 52: 6783 + 133 = 6916
Step 53: 6916 + 133 = 7049
Step 54: 7049 + 133 = 7182
Step 55: 7182 + 133 = 7315
Step 56: 7315 + 133 = 7448
Step 57: 7448 + 133 = 7581
Step 58: 7581 + 133 = 7714
Step 59: 7714 + 133 = 7847
Step 60: 7847 + 133 = 7980
Step 61: 7980 + 133 = 8113
Step 62: 8113 + 133 = 8246
Step 63: 8246 + 133 = 8379
Step 64: 8379 + 133 = 8512
Step 65: 8512 + 133 = 8645
Step 66: 8645 + 133 = 8778
Step 67: 8778 + 133 = 8911
Step 68: 8911 + 133 = 9044
Step 69: 9044 + 133 = 9177
Step 70: 9177 + 133 = 9310
Step 71: 9310 + 133 = 9443
Step 72: 9443 + 133 = 9576
Step 73: 9576 + 133 = 9709
Step 74: 9709 + 133 = 9842
Step 75: 9842 + 133 = 9975
Step 76: 9975 + 133 = 10108
Step 77: 10108 + 133 = 10241
Step 78: 10241 + 133 = 10374
Step 79: 10374 + 133 = 10507
Step 80: 10507 + 133 = 10640
Step 81: 10640 + 133 = 10773
Step 82: 10773 + 133 = 10906
Step 83: 10906 + 133 = 11039
Step 84: 11039 + 133 = 11172
Step 85: 11172 + 133 = 11305
Step 86: 11305 + 133 = 11438
Step 87: 11438 + 133 = 11571
Step 88: 11571 + 133 = 11704
Step 89: 11704 + 133 = 11837
Step 90: 11837 + 133 = 11970
Step 91: 11970 + 133 = 12103
Step 92: 12103 + 133 = 12236
Step 93: 12236 + 133 = 12369
Step 94: 12369 + 133 = 12502
Step 95: 12502 + 133 = 12635
Step 96: 12635 + 133 = 12768
Step 97: 12768 + 133 = 12901
Step 98: 12901 + 133 = 13034
Step 99: 13034 + 133 = 13167
Step 100: 13167 + 133 = 13300
Step 101: 13300 + 133 = 13433
Step 102: 13433 + 133 = 13566
Step 103: 13566 + 133 = 13699
Step 104: 13699 + 133 = 13832
Step 105: 13832 + 133 = 13965
Step 106: 13965 + 133 = 14098
Step 107: 14098 + 133 = 14231
Step 108: 14231 + 133 = 14364
Step 109: 14364 + 133 = 14497
Step 110: 14497 + 133 = 14630
Step 111: 14630 + 133 = 14763
Step 112: 14763 + 133 = 14896
Step 113: 14896 + 133 = 15029
Step 114: 15029 + 133 = 15162
Step 115: 15162 + 133 = 15295
Step 116: 15295 + 133 = 15428
Step 117: 15428 + 133 = 15561
Step 118: 15561 + 133 = 15694
Step 119: 15694 + 133 = 15827
Step 120: 15827 + 133 = 15960
Step 121: 15960 + 133 = 16093
Step 122: 16093 + 133 = 16226
Step 123: 16226 + 133 = 16359
Step 124: 16359 + 133 = 16492
Step 125: 16492 + 133 = 16625
Step 126: 16625 + 133 = 16758
Step 127: 16758 + 133 = 16891
Step 128: 16891 + 133 = 17024
Step 129: 17024 + 133 = 17157
Step 130: 17157 + 133 = 17290
Step 131: 17290 + 133 = 17423
Step 132: 17423 + 133 = 17556
Step 133: 17556 + 133 = 17689
Step 134: 17689 + 133 = 17822
Step 135: 17822 + 133 = 17955
Step 136: 17955 + 133 = 18088
Step 137: 18088 + 133 = 18221
Step 138: 18221 + 133 = 18354
Step 139: 18354 + 133 = 18487
Step 140: 18487 + 133 = 18620
Step 141: 18620 + 133 = 18753
Step 142: 18753 + 133 = 18886

So, 133*142 = 18886