OK, let's crack this. We're given 919 and our task is to multiply it by 150. Essentially, we'll be adding 919 to itself 150 times.
Step 1: 0 + 919 = 919
Step 2: 919 + 919 = 1838
Step 3: 1838 + 919 = 2757
Step 4: 2757 + 919 = 3676
Step 5: 3676 + 919 = 4595
Step 6: 4595 + 919 = 5514
Step 7: 5514 + 919 = 6433
Step 8: 6433 + 919 = 7352
Step 9: 7352 + 919 = 8271
Step 10: 8271 + 919 = 9190
Step 11: 9190 + 919 = 10109
Step 12: 10109 + 919 = 11028
Step 13: 11028 + 919 = 11947
Step 14: 11947 + 919 = 12866
Step 15: 12866 + 919 = 13785
Step 16: 13785 + 919 = 14704
Step 17: 14704 + 919 = 15623
Step 18: 15623 + 919 = 16542
Step 19: 16542 + 919 = 17461
Step 20: 17461 + 919 = 18380
Step 21: 18380 + 919 = 19299
Step 22: 19299 + 919 = 20218
Step 23: 20218 + 919 = 21137
Step 24: 21137 + 919 = 22056
Step 25: 22056 + 919 = 22975
Step 26: 22975 + 919 = 23894
Step 27: 23894 + 919 = 24813
Step 28: 24813 + 919 = 25732
Step 29: 25732 + 919 = 26651
Step 30: 26651 + 919 = 27570
Step 31: 27570 + 919 = 28489
Step 32: 28489 + 919 = 29408
Step 33: 29408 + 919 = 30327
Step 34: 30327 + 919 = 31246
Step 35: 31246 + 919 = 32165
Step 36: 32165 + 919 = 33084
Step 37: 33084 + 919 = 34003
Step 38: 34003 + 919 = 34922
Step 39: 34922 + 919 = 35841
Step 40: 35841 + 919 = 36760
Step 41: 36760 + 919 = 37679
Step 42: 37679 + 919 = 38598
Step 43: 38598 + 919 = 39517
Step 44: 39517 + 919 = 40436
Step 45: 40436 + 919 = 41355
Step 46: 41355 + 919 = 42274
Step 47: 42274 + 919 = 43193
Step 48: 43193 + 919 = 44112
Step 49: 44112 + 919 = 45031
Step 50: 45031 + 919 = 45950
Step 51: 45950 + 919 = 46869
Step 52: 46869 + 919 = 47788
Step 53: 47788 + 919 = 48707
Step 54: 48707 + 919 = 49626
Step 55: 49626 + 919 = 50545
Step 56: 50545 + 919 = 51464
Step 57: 51464 + 919 = 52383
Step 58: 52383 + 919 = 53302
Step 59: 53302 + 919 = 54221
Step 60: 54221 + 919 = 55140
Step 61: 55140 + 919 = 56059
Step 62: 56059 + 919 = 56978
Step 63: 56978 + 919 = 57897
Step 64: 57897 + 919 = 58816
Step 65: 58816 + 919 = 59735
Step 66: 59735 + 919 = 60654
Step 67: 60654 + 919 = 61573
Step 68: 61573 + 919 = 62492
Step 69: 62492 + 919 = 63411
Step 70: 63411 + 919 = 64330
Step 71: 64330 + 919 = 65249
Step 72: 65249 + 919 = 66168
Step 73: 66168 + 919 = 67087
Step 74: 67087 + 919 = 68006
Step 75: 68006 + 919 = 68925
Step 76: 68925 + 919 = 69844
Step 77: 69844 + 919 = 70763
Step 78: 70763 + 919 = 71682
Step 79: 71682 + 919 = 72601
Step 80: 72601 + 919 = 73520
Step 81: 73520 + 919 = 74439
Step 82: 74439 + 919 = 75358
Step 83: 75358 + 919 = 76277
Step 84: 76277 + 919 = 77196
Step 85: 77196 + 919 = 78115
Step 86: 78115 + 919 = 79034
Step 87: 79034 + 919 = 79953
Step 88: 79953 + 919 = 80872
Step 89: 80872 + 919 = 81791
Step 90: 81791 + 919 = 82710
Step 91: 82710 + 919 = 83629
Step 92: 83629 + 919 = 84548
Step 93: 84548 + 919 = 85467
Step 94: 85467 + 919 = 86386
Step 95: 86386 + 919 = 87305
Step 96: 87305 + 919 = 88224
Step 97: 88224 + 919 = 89143
Step 98: 89143 + 919 = 90062
Step 99: 90062 + 919 = 90981
Step 100: 90981 + 919 = 91900
Step 101: 91900 + 919 = 92819
Step 102: 92819 + 919 = 93738
Step 103: 93738 + 919 = 94657
Step 104: 94657 + 919 = 95576
Step 105: 95576 + 919 = 96495
Step 106: 96495 + 919 = 97414
Step 107: 97414 + 919 = 98333
Step 108: 98333 + 919 = 99252
Step 109: 99252 + 919 = 100171
Step 110: 100171 + 919 = 101090
Step 111: 101090 + 919 = 102009
Step 112: 102009 + 919 = 102928
Step 113: 102928 + 919 = 103847
Step 114: 103847 + 919 = 104766
Step 115: 104766 + 919 = 105685
Step 116: 105685 + 919 = 106604
Step 117: 106604 + 919 = 107523
Step 118: 107523 + 919 = 108442
Step 119: 108442 + 919 = 109361
Step 120: 109361 + 919 = 110280
Step 121: 110280 + 919 = 111199
Step 122: 111199 + 919 = 112118
Step 123: 112118 + 919 = 113037
Step 124: 113037 + 919 = 113956
Step 125: 113956 + 919 = 114875
Step 126: 114875 + 919 = 115794
Step 127: 115794 + 919 = 116713
Step 128: 116713 + 919 = 117632
Step 129: 117632 + 919 = 118551
Step 130: 118551 + 919 = 119470
Step 131: 119470 + 919 = 120389
Step 132: 120389 + 919 = 121308
Step 133: 121308 + 919 = 122227
Step 134: 122227 + 919 = 123146
Step 135: 123146 + 919 = 124065
Step 136: 124065 + 919 = 124984
Step 137: 124984 + 919 = 125903
Step 138: 125903 + 919 = 126822
Step 139: 126822 + 919 = 127741
Step 140: 127741 + 919 = 128660
Step 141: 128660 + 919 = 129579
Step 142: 129579 + 919 = 130498
Step 143: 130498 + 919 = 131417
Step 144: 131417 + 919 = 132336
Step 145: 132336 + 919 = 133255
Step 146: 133255 + 919 = 134174
Step 147: 134174 + 919 = 135093
Step 148: 135093 + 919 = 136012
Step 149: 136012 + 919 = 136931
Step 150: 136931 + 919 = 137850

So, 919*150 = 137850