Without delay, let's solve this. We've got 374 and we will be multiplying it by 90, that is, adding 374 to itself 90 times.
Step 1: 0 + 374 = 374
Step 2: 374 + 374 = 748
Step 3: 748 + 374 = 1122
Step 4: 1122 + 374 = 1496
Step 5: 1496 + 374 = 1870
Step 6: 1870 + 374 = 2244
Step 7: 2244 + 374 = 2618
Step 8: 2618 + 374 = 2992
Step 9: 2992 + 374 = 3366
Step 10: 3366 + 374 = 3740
Step 11: 3740 + 374 = 4114
Step 12: 4114 + 374 = 4488
Step 13: 4488 + 374 = 4862
Step 14: 4862 + 374 = 5236
Step 15: 5236 + 374 = 5610
Step 16: 5610 + 374 = 5984
Step 17: 5984 + 374 = 6358
Step 18: 6358 + 374 = 6732
Step 19: 6732 + 374 = 7106
Step 20: 7106 + 374 = 7480
Step 21: 7480 + 374 = 7854
Step 22: 7854 + 374 = 8228
Step 23: 8228 + 374 = 8602
Step 24: 8602 + 374 = 8976
Step 25: 8976 + 374 = 9350
Step 26: 9350 + 374 = 9724
Step 27: 9724 + 374 = 10098
Step 28: 10098 + 374 = 10472
Step 29: 10472 + 374 = 10846
Step 30: 10846 + 374 = 11220
Step 31: 11220 + 374 = 11594
Step 32: 11594 + 374 = 11968
Step 33: 11968 + 374 = 12342
Step 34: 12342 + 374 = 12716
Step 35: 12716 + 374 = 13090
Step 36: 13090 + 374 = 13464
Step 37: 13464 + 374 = 13838
Step 38: 13838 + 374 = 14212
Step 39: 14212 + 374 = 14586
Step 40: 14586 + 374 = 14960
Step 41: 14960 + 374 = 15334
Step 42: 15334 + 374 = 15708
Step 43: 15708 + 374 = 16082
Step 44: 16082 + 374 = 16456
Step 45: 16456 + 374 = 16830
Step 46: 16830 + 374 = 17204
Step 47: 17204 + 374 = 17578
Step 48: 17578 + 374 = 17952
Step 49: 17952 + 374 = 18326
Step 50: 18326 + 374 = 18700
Step 51: 18700 + 374 = 19074
Step 52: 19074 + 374 = 19448
Step 53: 19448 + 374 = 19822
Step 54: 19822 + 374 = 20196
Step 55: 20196 + 374 = 20570
Step 56: 20570 + 374 = 20944
Step 57: 20944 + 374 = 21318
Step 58: 21318 + 374 = 21692
Step 59: 21692 + 374 = 22066
Step 60: 22066 + 374 = 22440
Step 61: 22440 + 374 = 22814
Step 62: 22814 + 374 = 23188
Step 63: 23188 + 374 = 23562
Step 64: 23562 + 374 = 23936
Step 65: 23936 + 374 = 24310
Step 66: 24310 + 374 = 24684
Step 67: 24684 + 374 = 25058
Step 68: 25058 + 374 = 25432
Step 69: 25432 + 374 = 25806
Step 70: 25806 + 374 = 26180
Step 71: 26180 + 374 = 26554
Step 72: 26554 + 374 = 26928
Step 73: 26928 + 374 = 27302
Step 74: 27302 + 374 = 27676
Step 75: 27676 + 374 = 28050
Step 76: 28050 + 374 = 28424
Step 77: 28424 + 374 = 28798
Step 78: 28798 + 374 = 29172
Step 79: 29172 + 374 = 29546
Step 80: 29546 + 374 = 29920
Step 81: 29920 + 374 = 30294
Step 82: 30294 + 374 = 30668
Step 83: 30668 + 374 = 31042
Step 84: 31042 + 374 = 31416
Step 85: 31416 + 374 = 31790
Step 86: 31790 + 374 = 32164
Step 87: 32164 + 374 = 32538
Step 88: 32538 + 374 = 32912
Step 89: 32912 + 374 = 33286
Step 90: 33286 + 374 = 33660

So, 374*90 = 33660