Let's get this math done. We have 109 and we're going to multiply it by 84. This is the same as taking 109 and adding it to itself 84 times.
Step 1: 0 + 109 = 109
Step 2: 109 + 109 = 218
Step 3: 218 + 109 = 327
Step 4: 327 + 109 = 436
Step 5: 436 + 109 = 545
Step 6: 545 + 109 = 654
Step 7: 654 + 109 = 763
Step 8: 763 + 109 = 872
Step 9: 872 + 109 = 981
Step 10: 981 + 109 = 1090
Step 11: 1090 + 109 = 1199
Step 12: 1199 + 109 = 1308
Step 13: 1308 + 109 = 1417
Step 14: 1417 + 109 = 1526
Step 15: 1526 + 109 = 1635
Step 16: 1635 + 109 = 1744
Step 17: 1744 + 109 = 1853
Step 18: 1853 + 109 = 1962
Step 19: 1962 + 109 = 2071
Step 20: 2071 + 109 = 2180
Step 21: 2180 + 109 = 2289
Step 22: 2289 + 109 = 2398
Step 23: 2398 + 109 = 2507
Step 24: 2507 + 109 = 2616
Step 25: 2616 + 109 = 2725
Step 26: 2725 + 109 = 2834
Step 27: 2834 + 109 = 2943
Step 28: 2943 + 109 = 3052
Step 29: 3052 + 109 = 3161
Step 30: 3161 + 109 = 3270
Step 31: 3270 + 109 = 3379
Step 32: 3379 + 109 = 3488
Step 33: 3488 + 109 = 3597
Step 34: 3597 + 109 = 3706
Step 35: 3706 + 109 = 3815
Step 36: 3815 + 109 = 3924
Step 37: 3924 + 109 = 4033
Step 38: 4033 + 109 = 4142
Step 39: 4142 + 109 = 4251
Step 40: 4251 + 109 = 4360
Step 41: 4360 + 109 = 4469
Step 42: 4469 + 109 = 4578
Step 43: 4578 + 109 = 4687
Step 44: 4687 + 109 = 4796
Step 45: 4796 + 109 = 4905
Step 46: 4905 + 109 = 5014
Step 47: 5014 + 109 = 5123
Step 48: 5123 + 109 = 5232
Step 49: 5232 + 109 = 5341
Step 50: 5341 + 109 = 5450
Step 51: 5450 + 109 = 5559
Step 52: 5559 + 109 = 5668
Step 53: 5668 + 109 = 5777
Step 54: 5777 + 109 = 5886
Step 55: 5886 + 109 = 5995
Step 56: 5995 + 109 = 6104
Step 57: 6104 + 109 = 6213
Step 58: 6213 + 109 = 6322
Step 59: 6322 + 109 = 6431
Step 60: 6431 + 109 = 6540
Step 61: 6540 + 109 = 6649
Step 62: 6649 + 109 = 6758
Step 63: 6758 + 109 = 6867
Step 64: 6867 + 109 = 6976
Step 65: 6976 + 109 = 7085
Step 66: 7085 + 109 = 7194
Step 67: 7194 + 109 = 7303
Step 68: 7303 + 109 = 7412
Step 69: 7412 + 109 = 7521
Step 70: 7521 + 109 = 7630
Step 71: 7630 + 109 = 7739
Step 72: 7739 + 109 = 7848
Step 73: 7848 + 109 = 7957
Step 74: 7957 + 109 = 8066
Step 75: 8066 + 109 = 8175
Step 76: 8175 + 109 = 8284
Step 77: 8284 + 109 = 8393
Step 78: 8393 + 109 = 8502
Step 79: 8502 + 109 = 8611
Step 80: 8611 + 109 = 8720
Step 81: 8720 + 109 = 8829
Step 82: 8829 + 109 = 8938
Step 83: 8938 + 109 = 9047
Step 84: 9047 + 109 = 9156

So, 109*84 = 9156