OK, let's work through this together. We're starting with 406 and we're going to multiply it by 89, which means we add 406 to itself 89 times.
Step 1: 0 + 406 = 406
Step 2: 406 + 406 = 812
Step 3: 812 + 406 = 1218
Step 4: 1218 + 406 = 1624
Step 5: 1624 + 406 = 2030
Step 6: 2030 + 406 = 2436
Step 7: 2436 + 406 = 2842
Step 8: 2842 + 406 = 3248
Step 9: 3248 + 406 = 3654
Step 10: 3654 + 406 = 4060
Step 11: 4060 + 406 = 4466
Step 12: 4466 + 406 = 4872
Step 13: 4872 + 406 = 5278
Step 14: 5278 + 406 = 5684
Step 15: 5684 + 406 = 6090
Step 16: 6090 + 406 = 6496
Step 17: 6496 + 406 = 6902
Step 18: 6902 + 406 = 7308
Step 19: 7308 + 406 = 7714
Step 20: 7714 + 406 = 8120
Step 21: 8120 + 406 = 8526
Step 22: 8526 + 406 = 8932
Step 23: 8932 + 406 = 9338
Step 24: 9338 + 406 = 9744
Step 25: 9744 + 406 = 10150
Step 26: 10150 + 406 = 10556
Step 27: 10556 + 406 = 10962
Step 28: 10962 + 406 = 11368
Step 29: 11368 + 406 = 11774
Step 30: 11774 + 406 = 12180
Step 31: 12180 + 406 = 12586
Step 32: 12586 + 406 = 12992
Step 33: 12992 + 406 = 13398
Step 34: 13398 + 406 = 13804
Step 35: 13804 + 406 = 14210
Step 36: 14210 + 406 = 14616
Step 37: 14616 + 406 = 15022
Step 38: 15022 + 406 = 15428
Step 39: 15428 + 406 = 15834
Step 40: 15834 + 406 = 16240
Step 41: 16240 + 406 = 16646
Step 42: 16646 + 406 = 17052
Step 43: 17052 + 406 = 17458
Step 44: 17458 + 406 = 17864
Step 45: 17864 + 406 = 18270
Step 46: 18270 + 406 = 18676
Step 47: 18676 + 406 = 19082
Step 48: 19082 + 406 = 19488
Step 49: 19488 + 406 = 19894
Step 50: 19894 + 406 = 20300
Step 51: 20300 + 406 = 20706
Step 52: 20706 + 406 = 21112
Step 53: 21112 + 406 = 21518
Step 54: 21518 + 406 = 21924
Step 55: 21924 + 406 = 22330
Step 56: 22330 + 406 = 22736
Step 57: 22736 + 406 = 23142
Step 58: 23142 + 406 = 23548
Step 59: 23548 + 406 = 23954
Step 60: 23954 + 406 = 24360
Step 61: 24360 + 406 = 24766
Step 62: 24766 + 406 = 25172
Step 63: 25172 + 406 = 25578
Step 64: 25578 + 406 = 25984
Step 65: 25984 + 406 = 26390
Step 66: 26390 + 406 = 26796
Step 67: 26796 + 406 = 27202
Step 68: 27202 + 406 = 27608
Step 69: 27608 + 406 = 28014
Step 70: 28014 + 406 = 28420
Step 71: 28420 + 406 = 28826
Step 72: 28826 + 406 = 29232
Step 73: 29232 + 406 = 29638
Step 74: 29638 + 406 = 30044
Step 75: 30044 + 406 = 30450
Step 76: 30450 + 406 = 30856
Step 77: 30856 + 406 = 31262
Step 78: 31262 + 406 = 31668
Step 79: 31668 + 406 = 32074
Step 80: 32074 + 406 = 32480
Step 81: 32480 + 406 = 32886
Step 82: 32886 + 406 = 33292
Step 83: 33292 + 406 = 33698
Step 84: 33698 + 406 = 34104
Step 85: 34104 + 406 = 34510
Step 86: 34510 + 406 = 34916
Step 87: 34916 + 406 = 35322
Step 88: 35322 + 406 = 35728
Step 89: 35728 + 406 = 36134

So, 406*89 = 36134