Alright, let's solve this math problem step by step. First, we have the number 636. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 154. So, we're going to take the number 636 and add it to itself 154 times.
Step 1: 0 + 636 = 636
Step 2: 636 + 636 = 1272
Step 3: 1272 + 636 = 1908
Step 4: 1908 + 636 = 2544
Step 5: 2544 + 636 = 3180
Step 6: 3180 + 636 = 3816
Step 7: 3816 + 636 = 4452
Step 8: 4452 + 636 = 5088
Step 9: 5088 + 636 = 5724
Step 10: 5724 + 636 = 6360
Step 11: 6360 + 636 = 6996
Step 12: 6996 + 636 = 7632
Step 13: 7632 + 636 = 8268
Step 14: 8268 + 636 = 8904
Step 15: 8904 + 636 = 9540
Step 16: 9540 + 636 = 10176
Step 17: 10176 + 636 = 10812
Step 18: 10812 + 636 = 11448
Step 19: 11448 + 636 = 12084
Step 20: 12084 + 636 = 12720
Step 21: 12720 + 636 = 13356
Step 22: 13356 + 636 = 13992
Step 23: 13992 + 636 = 14628
Step 24: 14628 + 636 = 15264
Step 25: 15264 + 636 = 15900
Step 26: 15900 + 636 = 16536
Step 27: 16536 + 636 = 17172
Step 28: 17172 + 636 = 17808
Step 29: 17808 + 636 = 18444
Step 30: 18444 + 636 = 19080
Step 31: 19080 + 636 = 19716
Step 32: 19716 + 636 = 20352
Step 33: 20352 + 636 = 20988
Step 34: 20988 + 636 = 21624
Step 35: 21624 + 636 = 22260
Step 36: 22260 + 636 = 22896
Step 37: 22896 + 636 = 23532
Step 38: 23532 + 636 = 24168
Step 39: 24168 + 636 = 24804
Step 40: 24804 + 636 = 25440
Step 41: 25440 + 636 = 26076
Step 42: 26076 + 636 = 26712
Step 43: 26712 + 636 = 27348
Step 44: 27348 + 636 = 27984
Step 45: 27984 + 636 = 28620
Step 46: 28620 + 636 = 29256
Step 47: 29256 + 636 = 29892
Step 48: 29892 + 636 = 30528
Step 49: 30528 + 636 = 31164
Step 50: 31164 + 636 = 31800
Step 51: 31800 + 636 = 32436
Step 52: 32436 + 636 = 33072
Step 53: 33072 + 636 = 33708
Step 54: 33708 + 636 = 34344
Step 55: 34344 + 636 = 34980
Step 56: 34980 + 636 = 35616
Step 57: 35616 + 636 = 36252
Step 58: 36252 + 636 = 36888
Step 59: 36888 + 636 = 37524
Step 60: 37524 + 636 = 38160
Step 61: 38160 + 636 = 38796
Step 62: 38796 + 636 = 39432
Step 63: 39432 + 636 = 40068
Step 64: 40068 + 636 = 40704
Step 65: 40704 + 636 = 41340
Step 66: 41340 + 636 = 41976
Step 67: 41976 + 636 = 42612
Step 68: 42612 + 636 = 43248
Step 69: 43248 + 636 = 43884
Step 70: 43884 + 636 = 44520
Step 71: 44520 + 636 = 45156
Step 72: 45156 + 636 = 45792
Step 73: 45792 + 636 = 46428
Step 74: 46428 + 636 = 47064
Step 75: 47064 + 636 = 47700
Step 76: 47700 + 636 = 48336
Step 77: 48336 + 636 = 48972
Step 78: 48972 + 636 = 49608
Step 79: 49608 + 636 = 50244
Step 80: 50244 + 636 = 50880
Step 81: 50880 + 636 = 51516
Step 82: 51516 + 636 = 52152
Step 83: 52152 + 636 = 52788
Step 84: 52788 + 636 = 53424
Step 85: 53424 + 636 = 54060
Step 86: 54060 + 636 = 54696
Step 87: 54696 + 636 = 55332
Step 88: 55332 + 636 = 55968
Step 89: 55968 + 636 = 56604
Step 90: 56604 + 636 = 57240
Step 91: 57240 + 636 = 57876
Step 92: 57876 + 636 = 58512
Step 93: 58512 + 636 = 59148
Step 94: 59148 + 636 = 59784
Step 95: 59784 + 636 = 60420
Step 96: 60420 + 636 = 61056
Step 97: 61056 + 636 = 61692
Step 98: 61692 + 636 = 62328
Step 99: 62328 + 636 = 62964
Step 100: 62964 + 636 = 63600
Step 101: 63600 + 636 = 64236
Step 102: 64236 + 636 = 64872
Step 103: 64872 + 636 = 65508
Step 104: 65508 + 636 = 66144
Step 105: 66144 + 636 = 66780
Step 106: 66780 + 636 = 67416
Step 107: 67416 + 636 = 68052
Step 108: 68052 + 636 = 68688
Step 109: 68688 + 636 = 69324
Step 110: 69324 + 636 = 69960
Step 111: 69960 + 636 = 70596
Step 112: 70596 + 636 = 71232
Step 113: 71232 + 636 = 71868
Step 114: 71868 + 636 = 72504
Step 115: 72504 + 636 = 73140
Step 116: 73140 + 636 = 73776
Step 117: 73776 + 636 = 74412
Step 118: 74412 + 636 = 75048
Step 119: 75048 + 636 = 75684
Step 120: 75684 + 636 = 76320
Step 121: 76320 + 636 = 76956
Step 122: 76956 + 636 = 77592
Step 123: 77592 + 636 = 78228
Step 124: 78228 + 636 = 78864
Step 125: 78864 + 636 = 79500
Step 126: 79500 + 636 = 80136
Step 127: 80136 + 636 = 80772
Step 128: 80772 + 636 = 81408
Step 129: 81408 + 636 = 82044
Step 130: 82044 + 636 = 82680
Step 131: 82680 + 636 = 83316
Step 132: 83316 + 636 = 83952
Step 133: 83952 + 636 = 84588
Step 134: 84588 + 636 = 85224
Step 135: 85224 + 636 = 85860
Step 136: 85860 + 636 = 86496
Step 137: 86496 + 636 = 87132
Step 138: 87132 + 636 = 87768
Step 139: 87768 + 636 = 88404
Step 140: 88404 + 636 = 89040
Step 141: 89040 + 636 = 89676
Step 142: 89676 + 636 = 90312
Step 143: 90312 + 636 = 90948
Step 144: 90948 + 636 = 91584
Step 145: 91584 + 636 = 92220
Step 146: 92220 + 636 = 92856
Step 147: 92856 + 636 = 93492
Step 148: 93492 + 636 = 94128
Step 149: 94128 + 636 = 94764
Step 150: 94764 + 636 = 95400
Step 151: 95400 + 636 = 96036
Step 152: 96036 + 636 = 96672
Step 153: 96672 + 636 = 97308
Step 154: 97308 + 636 = 97944

So, 636*154 = 97944