Let's get this math done. We have 927 and we're going to multiply it by 86. This is the same as taking 927 and adding it to itself 86 times.
Step 1: 0 + 927 = 927
Step 2: 927 + 927 = 1854
Step 3: 1854 + 927 = 2781
Step 4: 2781 + 927 = 3708
Step 5: 3708 + 927 = 4635
Step 6: 4635 + 927 = 5562
Step 7: 5562 + 927 = 6489
Step 8: 6489 + 927 = 7416
Step 9: 7416 + 927 = 8343
Step 10: 8343 + 927 = 9270
Step 11: 9270 + 927 = 10197
Step 12: 10197 + 927 = 11124
Step 13: 11124 + 927 = 12051
Step 14: 12051 + 927 = 12978
Step 15: 12978 + 927 = 13905
Step 16: 13905 + 927 = 14832
Step 17: 14832 + 927 = 15759
Step 18: 15759 + 927 = 16686
Step 19: 16686 + 927 = 17613
Step 20: 17613 + 927 = 18540
Step 21: 18540 + 927 = 19467
Step 22: 19467 + 927 = 20394
Step 23: 20394 + 927 = 21321
Step 24: 21321 + 927 = 22248
Step 25: 22248 + 927 = 23175
Step 26: 23175 + 927 = 24102
Step 27: 24102 + 927 = 25029
Step 28: 25029 + 927 = 25956
Step 29: 25956 + 927 = 26883
Step 30: 26883 + 927 = 27810
Step 31: 27810 + 927 = 28737
Step 32: 28737 + 927 = 29664
Step 33: 29664 + 927 = 30591
Step 34: 30591 + 927 = 31518
Step 35: 31518 + 927 = 32445
Step 36: 32445 + 927 = 33372
Step 37: 33372 + 927 = 34299
Step 38: 34299 + 927 = 35226
Step 39: 35226 + 927 = 36153
Step 40: 36153 + 927 = 37080
Step 41: 37080 + 927 = 38007
Step 42: 38007 + 927 = 38934
Step 43: 38934 + 927 = 39861
Step 44: 39861 + 927 = 40788
Step 45: 40788 + 927 = 41715
Step 46: 41715 + 927 = 42642
Step 47: 42642 + 927 = 43569
Step 48: 43569 + 927 = 44496
Step 49: 44496 + 927 = 45423
Step 50: 45423 + 927 = 46350
Step 51: 46350 + 927 = 47277
Step 52: 47277 + 927 = 48204
Step 53: 48204 + 927 = 49131
Step 54: 49131 + 927 = 50058
Step 55: 50058 + 927 = 50985
Step 56: 50985 + 927 = 51912
Step 57: 51912 + 927 = 52839
Step 58: 52839 + 927 = 53766
Step 59: 53766 + 927 = 54693
Step 60: 54693 + 927 = 55620
Step 61: 55620 + 927 = 56547
Step 62: 56547 + 927 = 57474
Step 63: 57474 + 927 = 58401
Step 64: 58401 + 927 = 59328
Step 65: 59328 + 927 = 60255
Step 66: 60255 + 927 = 61182
Step 67: 61182 + 927 = 62109
Step 68: 62109 + 927 = 63036
Step 69: 63036 + 927 = 63963
Step 70: 63963 + 927 = 64890
Step 71: 64890 + 927 = 65817
Step 72: 65817 + 927 = 66744
Step 73: 66744 + 927 = 67671
Step 74: 67671 + 927 = 68598
Step 75: 68598 + 927 = 69525
Step 76: 69525 + 927 = 70452
Step 77: 70452 + 927 = 71379
Step 78: 71379 + 927 = 72306
Step 79: 72306 + 927 = 73233
Step 80: 73233 + 927 = 74160
Step 81: 74160 + 927 = 75087
Step 82: 75087 + 927 = 76014
Step 83: 76014 + 927 = 76941
Step 84: 76941 + 927 = 77868
Step 85: 77868 + 927 = 78795
Step 86: 78795 + 927 = 79722

So, 927*86 = 79722