Let's roll up our sleeves and solve this. We have 893 and we're going to multiply it by 99, essentially adding 893 to itself 99 times.
Step 1: 0 + 893 = 893
Step 2: 893 + 893 = 1786
Step 3: 1786 + 893 = 2679
Step 4: 2679 + 893 = 3572
Step 5: 3572 + 893 = 4465
Step 6: 4465 + 893 = 5358
Step 7: 5358 + 893 = 6251
Step 8: 6251 + 893 = 7144
Step 9: 7144 + 893 = 8037
Step 10: 8037 + 893 = 8930
Step 11: 8930 + 893 = 9823
Step 12: 9823 + 893 = 10716
Step 13: 10716 + 893 = 11609
Step 14: 11609 + 893 = 12502
Step 15: 12502 + 893 = 13395
Step 16: 13395 + 893 = 14288
Step 17: 14288 + 893 = 15181
Step 18: 15181 + 893 = 16074
Step 19: 16074 + 893 = 16967
Step 20: 16967 + 893 = 17860
Step 21: 17860 + 893 = 18753
Step 22: 18753 + 893 = 19646
Step 23: 19646 + 893 = 20539
Step 24: 20539 + 893 = 21432
Step 25: 21432 + 893 = 22325
Step 26: 22325 + 893 = 23218
Step 27: 23218 + 893 = 24111
Step 28: 24111 + 893 = 25004
Step 29: 25004 + 893 = 25897
Step 30: 25897 + 893 = 26790
Step 31: 26790 + 893 = 27683
Step 32: 27683 + 893 = 28576
Step 33: 28576 + 893 = 29469
Step 34: 29469 + 893 = 30362
Step 35: 30362 + 893 = 31255
Step 36: 31255 + 893 = 32148
Step 37: 32148 + 893 = 33041
Step 38: 33041 + 893 = 33934
Step 39: 33934 + 893 = 34827
Step 40: 34827 + 893 = 35720
Step 41: 35720 + 893 = 36613
Step 42: 36613 + 893 = 37506
Step 43: 37506 + 893 = 38399
Step 44: 38399 + 893 = 39292
Step 45: 39292 + 893 = 40185
Step 46: 40185 + 893 = 41078
Step 47: 41078 + 893 = 41971
Step 48: 41971 + 893 = 42864
Step 49: 42864 + 893 = 43757
Step 50: 43757 + 893 = 44650
Step 51: 44650 + 893 = 45543
Step 52: 45543 + 893 = 46436
Step 53: 46436 + 893 = 47329
Step 54: 47329 + 893 = 48222
Step 55: 48222 + 893 = 49115
Step 56: 49115 + 893 = 50008
Step 57: 50008 + 893 = 50901
Step 58: 50901 + 893 = 51794
Step 59: 51794 + 893 = 52687
Step 60: 52687 + 893 = 53580
Step 61: 53580 + 893 = 54473
Step 62: 54473 + 893 = 55366
Step 63: 55366 + 893 = 56259
Step 64: 56259 + 893 = 57152
Step 65: 57152 + 893 = 58045
Step 66: 58045 + 893 = 58938
Step 67: 58938 + 893 = 59831
Step 68: 59831 + 893 = 60724
Step 69: 60724 + 893 = 61617
Step 70: 61617 + 893 = 62510
Step 71: 62510 + 893 = 63403
Step 72: 63403 + 893 = 64296
Step 73: 64296 + 893 = 65189
Step 74: 65189 + 893 = 66082
Step 75: 66082 + 893 = 66975
Step 76: 66975 + 893 = 67868
Step 77: 67868 + 893 = 68761
Step 78: 68761 + 893 = 69654
Step 79: 69654 + 893 = 70547
Step 80: 70547 + 893 = 71440
Step 81: 71440 + 893 = 72333
Step 82: 72333 + 893 = 73226
Step 83: 73226 + 893 = 74119
Step 84: 74119 + 893 = 75012
Step 85: 75012 + 893 = 75905
Step 86: 75905 + 893 = 76798
Step 87: 76798 + 893 = 77691
Step 88: 77691 + 893 = 78584
Step 89: 78584 + 893 = 79477
Step 90: 79477 + 893 = 80370
Step 91: 80370 + 893 = 81263
Step 92: 81263 + 893 = 82156
Step 93: 82156 + 893 = 83049
Step 94: 83049 + 893 = 83942
Step 95: 83942 + 893 = 84835
Step 96: 84835 + 893 = 85728
Step 97: 85728 + 893 = 86621
Step 98: 86621 + 893 = 87514
Step 99: 87514 + 893 = 88407

So, 893*99 = 88407