Let's get this math done. We have 439 and we're going to multiply it by 87. This is the same as taking 439 and adding it to itself 87 times.
Step 1: 0 + 439 = 439
Step 2: 439 + 439 = 878
Step 3: 878 + 439 = 1317
Step 4: 1317 + 439 = 1756
Step 5: 1756 + 439 = 2195
Step 6: 2195 + 439 = 2634
Step 7: 2634 + 439 = 3073
Step 8: 3073 + 439 = 3512
Step 9: 3512 + 439 = 3951
Step 10: 3951 + 439 = 4390
Step 11: 4390 + 439 = 4829
Step 12: 4829 + 439 = 5268
Step 13: 5268 + 439 = 5707
Step 14: 5707 + 439 = 6146
Step 15: 6146 + 439 = 6585
Step 16: 6585 + 439 = 7024
Step 17: 7024 + 439 = 7463
Step 18: 7463 + 439 = 7902
Step 19: 7902 + 439 = 8341
Step 20: 8341 + 439 = 8780
Step 21: 8780 + 439 = 9219
Step 22: 9219 + 439 = 9658
Step 23: 9658 + 439 = 10097
Step 24: 10097 + 439 = 10536
Step 25: 10536 + 439 = 10975
Step 26: 10975 + 439 = 11414
Step 27: 11414 + 439 = 11853
Step 28: 11853 + 439 = 12292
Step 29: 12292 + 439 = 12731
Step 30: 12731 + 439 = 13170
Step 31: 13170 + 439 = 13609
Step 32: 13609 + 439 = 14048
Step 33: 14048 + 439 = 14487
Step 34: 14487 + 439 = 14926
Step 35: 14926 + 439 = 15365
Step 36: 15365 + 439 = 15804
Step 37: 15804 + 439 = 16243
Step 38: 16243 + 439 = 16682
Step 39: 16682 + 439 = 17121
Step 40: 17121 + 439 = 17560
Step 41: 17560 + 439 = 17999
Step 42: 17999 + 439 = 18438
Step 43: 18438 + 439 = 18877
Step 44: 18877 + 439 = 19316
Step 45: 19316 + 439 = 19755
Step 46: 19755 + 439 = 20194
Step 47: 20194 + 439 = 20633
Step 48: 20633 + 439 = 21072
Step 49: 21072 + 439 = 21511
Step 50: 21511 + 439 = 21950
Step 51: 21950 + 439 = 22389
Step 52: 22389 + 439 = 22828
Step 53: 22828 + 439 = 23267
Step 54: 23267 + 439 = 23706
Step 55: 23706 + 439 = 24145
Step 56: 24145 + 439 = 24584
Step 57: 24584 + 439 = 25023
Step 58: 25023 + 439 = 25462
Step 59: 25462 + 439 = 25901
Step 60: 25901 + 439 = 26340
Step 61: 26340 + 439 = 26779
Step 62: 26779 + 439 = 27218
Step 63: 27218 + 439 = 27657
Step 64: 27657 + 439 = 28096
Step 65: 28096 + 439 = 28535
Step 66: 28535 + 439 = 28974
Step 67: 28974 + 439 = 29413
Step 68: 29413 + 439 = 29852
Step 69: 29852 + 439 = 30291
Step 70: 30291 + 439 = 30730
Step 71: 30730 + 439 = 31169
Step 72: 31169 + 439 = 31608
Step 73: 31608 + 439 = 32047
Step 74: 32047 + 439 = 32486
Step 75: 32486 + 439 = 32925
Step 76: 32925 + 439 = 33364
Step 77: 33364 + 439 = 33803
Step 78: 33803 + 439 = 34242
Step 79: 34242 + 439 = 34681
Step 80: 34681 + 439 = 35120
Step 81: 35120 + 439 = 35559
Step 82: 35559 + 439 = 35998
Step 83: 35998 + 439 = 36437
Step 84: 36437 + 439 = 36876
Step 85: 36876 + 439 = 37315
Step 86: 37315 + 439 = 37754
Step 87: 37754 + 439 = 38193

So, 439*87 = 38193