Let's roll up our sleeves and solve this. We have 908 and we're going to multiply it by 156, essentially adding 908 to itself 156 times.
Step 1: 0 + 908 = 908
Step 2: 908 + 908 = 1816
Step 3: 1816 + 908 = 2724
Step 4: 2724 + 908 = 3632
Step 5: 3632 + 908 = 4540
Step 6: 4540 + 908 = 5448
Step 7: 5448 + 908 = 6356
Step 8: 6356 + 908 = 7264
Step 9: 7264 + 908 = 8172
Step 10: 8172 + 908 = 9080
Step 11: 9080 + 908 = 9988
Step 12: 9988 + 908 = 10896
Step 13: 10896 + 908 = 11804
Step 14: 11804 + 908 = 12712
Step 15: 12712 + 908 = 13620
Step 16: 13620 + 908 = 14528
Step 17: 14528 + 908 = 15436
Step 18: 15436 + 908 = 16344
Step 19: 16344 + 908 = 17252
Step 20: 17252 + 908 = 18160
Step 21: 18160 + 908 = 19068
Step 22: 19068 + 908 = 19976
Step 23: 19976 + 908 = 20884
Step 24: 20884 + 908 = 21792
Step 25: 21792 + 908 = 22700
Step 26: 22700 + 908 = 23608
Step 27: 23608 + 908 = 24516
Step 28: 24516 + 908 = 25424
Step 29: 25424 + 908 = 26332
Step 30: 26332 + 908 = 27240
Step 31: 27240 + 908 = 28148
Step 32: 28148 + 908 = 29056
Step 33: 29056 + 908 = 29964
Step 34: 29964 + 908 = 30872
Step 35: 30872 + 908 = 31780
Step 36: 31780 + 908 = 32688
Step 37: 32688 + 908 = 33596
Step 38: 33596 + 908 = 34504
Step 39: 34504 + 908 = 35412
Step 40: 35412 + 908 = 36320
Step 41: 36320 + 908 = 37228
Step 42: 37228 + 908 = 38136
Step 43: 38136 + 908 = 39044
Step 44: 39044 + 908 = 39952
Step 45: 39952 + 908 = 40860
Step 46: 40860 + 908 = 41768
Step 47: 41768 + 908 = 42676
Step 48: 42676 + 908 = 43584
Step 49: 43584 + 908 = 44492
Step 50: 44492 + 908 = 45400
Step 51: 45400 + 908 = 46308
Step 52: 46308 + 908 = 47216
Step 53: 47216 + 908 = 48124
Step 54: 48124 + 908 = 49032
Step 55: 49032 + 908 = 49940
Step 56: 49940 + 908 = 50848
Step 57: 50848 + 908 = 51756
Step 58: 51756 + 908 = 52664
Step 59: 52664 + 908 = 53572
Step 60: 53572 + 908 = 54480
Step 61: 54480 + 908 = 55388
Step 62: 55388 + 908 = 56296
Step 63: 56296 + 908 = 57204
Step 64: 57204 + 908 = 58112
Step 65: 58112 + 908 = 59020
Step 66: 59020 + 908 = 59928
Step 67: 59928 + 908 = 60836
Step 68: 60836 + 908 = 61744
Step 69: 61744 + 908 = 62652
Step 70: 62652 + 908 = 63560
Step 71: 63560 + 908 = 64468
Step 72: 64468 + 908 = 65376
Step 73: 65376 + 908 = 66284
Step 74: 66284 + 908 = 67192
Step 75: 67192 + 908 = 68100
Step 76: 68100 + 908 = 69008
Step 77: 69008 + 908 = 69916
Step 78: 69916 + 908 = 70824
Step 79: 70824 + 908 = 71732
Step 80: 71732 + 908 = 72640
Step 81: 72640 + 908 = 73548
Step 82: 73548 + 908 = 74456
Step 83: 74456 + 908 = 75364
Step 84: 75364 + 908 = 76272
Step 85: 76272 + 908 = 77180
Step 86: 77180 + 908 = 78088
Step 87: 78088 + 908 = 78996
Step 88: 78996 + 908 = 79904
Step 89: 79904 + 908 = 80812
Step 90: 80812 + 908 = 81720
Step 91: 81720 + 908 = 82628
Step 92: 82628 + 908 = 83536
Step 93: 83536 + 908 = 84444
Step 94: 84444 + 908 = 85352
Step 95: 85352 + 908 = 86260
Step 96: 86260 + 908 = 87168
Step 97: 87168 + 908 = 88076
Step 98: 88076 + 908 = 88984
Step 99: 88984 + 908 = 89892
Step 100: 89892 + 908 = 90800
Step 101: 90800 + 908 = 91708
Step 102: 91708 + 908 = 92616
Step 103: 92616 + 908 = 93524
Step 104: 93524 + 908 = 94432
Step 105: 94432 + 908 = 95340
Step 106: 95340 + 908 = 96248
Step 107: 96248 + 908 = 97156
Step 108: 97156 + 908 = 98064
Step 109: 98064 + 908 = 98972
Step 110: 98972 + 908 = 99880
Step 111: 99880 + 908 = 100788
Step 112: 100788 + 908 = 101696
Step 113: 101696 + 908 = 102604
Step 114: 102604 + 908 = 103512
Step 115: 103512 + 908 = 104420
Step 116: 104420 + 908 = 105328
Step 117: 105328 + 908 = 106236
Step 118: 106236 + 908 = 107144
Step 119: 107144 + 908 = 108052
Step 120: 108052 + 908 = 108960
Step 121: 108960 + 908 = 109868
Step 122: 109868 + 908 = 110776
Step 123: 110776 + 908 = 111684
Step 124: 111684 + 908 = 112592
Step 125: 112592 + 908 = 113500
Step 126: 113500 + 908 = 114408
Step 127: 114408 + 908 = 115316
Step 128: 115316 + 908 = 116224
Step 129: 116224 + 908 = 117132
Step 130: 117132 + 908 = 118040
Step 131: 118040 + 908 = 118948
Step 132: 118948 + 908 = 119856
Step 133: 119856 + 908 = 120764
Step 134: 120764 + 908 = 121672
Step 135: 121672 + 908 = 122580
Step 136: 122580 + 908 = 123488
Step 137: 123488 + 908 = 124396
Step 138: 124396 + 908 = 125304
Step 139: 125304 + 908 = 126212
Step 140: 126212 + 908 = 127120
Step 141: 127120 + 908 = 128028
Step 142: 128028 + 908 = 128936
Step 143: 128936 + 908 = 129844
Step 144: 129844 + 908 = 130752
Step 145: 130752 + 908 = 131660
Step 146: 131660 + 908 = 132568
Step 147: 132568 + 908 = 133476
Step 148: 133476 + 908 = 134384
Step 149: 134384 + 908 = 135292
Step 150: 135292 + 908 = 136200
Step 151: 136200 + 908 = 137108
Step 152: 137108 + 908 = 138016
Step 153: 138016 + 908 = 138924
Step 154: 138924 + 908 = 139832
Step 155: 139832 + 908 = 140740
Step 156: 140740 + 908 = 141648

So, 908*156 = 141648