Alright, let's solve this math problem step by step. First, we have the number 903. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 133. So, we're going to take the number 903 and add it to itself 133 times.
Step 1: 0 + 903 = 903
Step 2: 903 + 903 = 1806
Step 3: 1806 + 903 = 2709
Step 4: 2709 + 903 = 3612
Step 5: 3612 + 903 = 4515
Step 6: 4515 + 903 = 5418
Step 7: 5418 + 903 = 6321
Step 8: 6321 + 903 = 7224
Step 9: 7224 + 903 = 8127
Step 10: 8127 + 903 = 9030
Step 11: 9030 + 903 = 9933
Step 12: 9933 + 903 = 10836
Step 13: 10836 + 903 = 11739
Step 14: 11739 + 903 = 12642
Step 15: 12642 + 903 = 13545
Step 16: 13545 + 903 = 14448
Step 17: 14448 + 903 = 15351
Step 18: 15351 + 903 = 16254
Step 19: 16254 + 903 = 17157
Step 20: 17157 + 903 = 18060
Step 21: 18060 + 903 = 18963
Step 22: 18963 + 903 = 19866
Step 23: 19866 + 903 = 20769
Step 24: 20769 + 903 = 21672
Step 25: 21672 + 903 = 22575
Step 26: 22575 + 903 = 23478
Step 27: 23478 + 903 = 24381
Step 28: 24381 + 903 = 25284
Step 29: 25284 + 903 = 26187
Step 30: 26187 + 903 = 27090
Step 31: 27090 + 903 = 27993
Step 32: 27993 + 903 = 28896
Step 33: 28896 + 903 = 29799
Step 34: 29799 + 903 = 30702
Step 35: 30702 + 903 = 31605
Step 36: 31605 + 903 = 32508
Step 37: 32508 + 903 = 33411
Step 38: 33411 + 903 = 34314
Step 39: 34314 + 903 = 35217
Step 40: 35217 + 903 = 36120
Step 41: 36120 + 903 = 37023
Step 42: 37023 + 903 = 37926
Step 43: 37926 + 903 = 38829
Step 44: 38829 + 903 = 39732
Step 45: 39732 + 903 = 40635
Step 46: 40635 + 903 = 41538
Step 47: 41538 + 903 = 42441
Step 48: 42441 + 903 = 43344
Step 49: 43344 + 903 = 44247
Step 50: 44247 + 903 = 45150
Step 51: 45150 + 903 = 46053
Step 52: 46053 + 903 = 46956
Step 53: 46956 + 903 = 47859
Step 54: 47859 + 903 = 48762
Step 55: 48762 + 903 = 49665
Step 56: 49665 + 903 = 50568
Step 57: 50568 + 903 = 51471
Step 58: 51471 + 903 = 52374
Step 59: 52374 + 903 = 53277
Step 60: 53277 + 903 = 54180
Step 61: 54180 + 903 = 55083
Step 62: 55083 + 903 = 55986
Step 63: 55986 + 903 = 56889
Step 64: 56889 + 903 = 57792
Step 65: 57792 + 903 = 58695
Step 66: 58695 + 903 = 59598
Step 67: 59598 + 903 = 60501
Step 68: 60501 + 903 = 61404
Step 69: 61404 + 903 = 62307
Step 70: 62307 + 903 = 63210
Step 71: 63210 + 903 = 64113
Step 72: 64113 + 903 = 65016
Step 73: 65016 + 903 = 65919
Step 74: 65919 + 903 = 66822
Step 75: 66822 + 903 = 67725
Step 76: 67725 + 903 = 68628
Step 77: 68628 + 903 = 69531
Step 78: 69531 + 903 = 70434
Step 79: 70434 + 903 = 71337
Step 80: 71337 + 903 = 72240
Step 81: 72240 + 903 = 73143
Step 82: 73143 + 903 = 74046
Step 83: 74046 + 903 = 74949
Step 84: 74949 + 903 = 75852
Step 85: 75852 + 903 = 76755
Step 86: 76755 + 903 = 77658
Step 87: 77658 + 903 = 78561
Step 88: 78561 + 903 = 79464
Step 89: 79464 + 903 = 80367
Step 90: 80367 + 903 = 81270
Step 91: 81270 + 903 = 82173
Step 92: 82173 + 903 = 83076
Step 93: 83076 + 903 = 83979
Step 94: 83979 + 903 = 84882
Step 95: 84882 + 903 = 85785
Step 96: 85785 + 903 = 86688
Step 97: 86688 + 903 = 87591
Step 98: 87591 + 903 = 88494
Step 99: 88494 + 903 = 89397
Step 100: 89397 + 903 = 90300
Step 101: 90300 + 903 = 91203
Step 102: 91203 + 903 = 92106
Step 103: 92106 + 903 = 93009
Step 104: 93009 + 903 = 93912
Step 105: 93912 + 903 = 94815
Step 106: 94815 + 903 = 95718
Step 107: 95718 + 903 = 96621
Step 108: 96621 + 903 = 97524
Step 109: 97524 + 903 = 98427
Step 110: 98427 + 903 = 99330
Step 111: 99330 + 903 = 100233
Step 112: 100233 + 903 = 101136
Step 113: 101136 + 903 = 102039
Step 114: 102039 + 903 = 102942
Step 115: 102942 + 903 = 103845
Step 116: 103845 + 903 = 104748
Step 117: 104748 + 903 = 105651
Step 118: 105651 + 903 = 106554
Step 119: 106554 + 903 = 107457
Step 120: 107457 + 903 = 108360
Step 121: 108360 + 903 = 109263
Step 122: 109263 + 903 = 110166
Step 123: 110166 + 903 = 111069
Step 124: 111069 + 903 = 111972
Step 125: 111972 + 903 = 112875
Step 126: 112875 + 903 = 113778
Step 127: 113778 + 903 = 114681
Step 128: 114681 + 903 = 115584
Step 129: 115584 + 903 = 116487
Step 130: 116487 + 903 = 117390
Step 131: 117390 + 903 = 118293
Step 132: 118293 + 903 = 119196
Step 133: 119196 + 903 = 120099

So, 903*133 = 120099