Let's roll up our sleeves and solve this. We have 801 and we're going to multiply it by 109, essentially adding 801 to itself 109 times.
Step 1: 0 + 801 = 801
Step 2: 801 + 801 = 1602
Step 3: 1602 + 801 = 2403
Step 4: 2403 + 801 = 3204
Step 5: 3204 + 801 = 4005
Step 6: 4005 + 801 = 4806
Step 7: 4806 + 801 = 5607
Step 8: 5607 + 801 = 6408
Step 9: 6408 + 801 = 7209
Step 10: 7209 + 801 = 8010
Step 11: 8010 + 801 = 8811
Step 12: 8811 + 801 = 9612
Step 13: 9612 + 801 = 10413
Step 14: 10413 + 801 = 11214
Step 15: 11214 + 801 = 12015
Step 16: 12015 + 801 = 12816
Step 17: 12816 + 801 = 13617
Step 18: 13617 + 801 = 14418
Step 19: 14418 + 801 = 15219
Step 20: 15219 + 801 = 16020
Step 21: 16020 + 801 = 16821
Step 22: 16821 + 801 = 17622
Step 23: 17622 + 801 = 18423
Step 24: 18423 + 801 = 19224
Step 25: 19224 + 801 = 20025
Step 26: 20025 + 801 = 20826
Step 27: 20826 + 801 = 21627
Step 28: 21627 + 801 = 22428
Step 29: 22428 + 801 = 23229
Step 30: 23229 + 801 = 24030
Step 31: 24030 + 801 = 24831
Step 32: 24831 + 801 = 25632
Step 33: 25632 + 801 = 26433
Step 34: 26433 + 801 = 27234
Step 35: 27234 + 801 = 28035
Step 36: 28035 + 801 = 28836
Step 37: 28836 + 801 = 29637
Step 38: 29637 + 801 = 30438
Step 39: 30438 + 801 = 31239
Step 40: 31239 + 801 = 32040
Step 41: 32040 + 801 = 32841
Step 42: 32841 + 801 = 33642
Step 43: 33642 + 801 = 34443
Step 44: 34443 + 801 = 35244
Step 45: 35244 + 801 = 36045
Step 46: 36045 + 801 = 36846
Step 47: 36846 + 801 = 37647
Step 48: 37647 + 801 = 38448
Step 49: 38448 + 801 = 39249
Step 50: 39249 + 801 = 40050
Step 51: 40050 + 801 = 40851
Step 52: 40851 + 801 = 41652
Step 53: 41652 + 801 = 42453
Step 54: 42453 + 801 = 43254
Step 55: 43254 + 801 = 44055
Step 56: 44055 + 801 = 44856
Step 57: 44856 + 801 = 45657
Step 58: 45657 + 801 = 46458
Step 59: 46458 + 801 = 47259
Step 60: 47259 + 801 = 48060
Step 61: 48060 + 801 = 48861
Step 62: 48861 + 801 = 49662
Step 63: 49662 + 801 = 50463
Step 64: 50463 + 801 = 51264
Step 65: 51264 + 801 = 52065
Step 66: 52065 + 801 = 52866
Step 67: 52866 + 801 = 53667
Step 68: 53667 + 801 = 54468
Step 69: 54468 + 801 = 55269
Step 70: 55269 + 801 = 56070
Step 71: 56070 + 801 = 56871
Step 72: 56871 + 801 = 57672
Step 73: 57672 + 801 = 58473
Step 74: 58473 + 801 = 59274
Step 75: 59274 + 801 = 60075
Step 76: 60075 + 801 = 60876
Step 77: 60876 + 801 = 61677
Step 78: 61677 + 801 = 62478
Step 79: 62478 + 801 = 63279
Step 80: 63279 + 801 = 64080
Step 81: 64080 + 801 = 64881
Step 82: 64881 + 801 = 65682
Step 83: 65682 + 801 = 66483
Step 84: 66483 + 801 = 67284
Step 85: 67284 + 801 = 68085
Step 86: 68085 + 801 = 68886
Step 87: 68886 + 801 = 69687
Step 88: 69687 + 801 = 70488
Step 89: 70488 + 801 = 71289
Step 90: 71289 + 801 = 72090
Step 91: 72090 + 801 = 72891
Step 92: 72891 + 801 = 73692
Step 93: 73692 + 801 = 74493
Step 94: 74493 + 801 = 75294
Step 95: 75294 + 801 = 76095
Step 96: 76095 + 801 = 76896
Step 97: 76896 + 801 = 77697
Step 98: 77697 + 801 = 78498
Step 99: 78498 + 801 = 79299
Step 100: 79299 + 801 = 80100
Step 101: 80100 + 801 = 80901
Step 102: 80901 + 801 = 81702
Step 103: 81702 + 801 = 82503
Step 104: 82503 + 801 = 83304
Step 105: 83304 + 801 = 84105
Step 106: 84105 + 801 = 84906
Step 107: 84906 + 801 = 85707
Step 108: 85707 + 801 = 86508
Step 109: 86508 + 801 = 87309

So, 801*109 = 87309