Let's get this math done. We have 803 and we're going to multiply it by 109. This is the same as taking 803 and adding it to itself 109 times.
Step 1: 0 + 803 = 803
Step 2: 803 + 803 = 1606
Step 3: 1606 + 803 = 2409
Step 4: 2409 + 803 = 3212
Step 5: 3212 + 803 = 4015
Step 6: 4015 + 803 = 4818
Step 7: 4818 + 803 = 5621
Step 8: 5621 + 803 = 6424
Step 9: 6424 + 803 = 7227
Step 10: 7227 + 803 = 8030
Step 11: 8030 + 803 = 8833
Step 12: 8833 + 803 = 9636
Step 13: 9636 + 803 = 10439
Step 14: 10439 + 803 = 11242
Step 15: 11242 + 803 = 12045
Step 16: 12045 + 803 = 12848
Step 17: 12848 + 803 = 13651
Step 18: 13651 + 803 = 14454
Step 19: 14454 + 803 = 15257
Step 20: 15257 + 803 = 16060
Step 21: 16060 + 803 = 16863
Step 22: 16863 + 803 = 17666
Step 23: 17666 + 803 = 18469
Step 24: 18469 + 803 = 19272
Step 25: 19272 + 803 = 20075
Step 26: 20075 + 803 = 20878
Step 27: 20878 + 803 = 21681
Step 28: 21681 + 803 = 22484
Step 29: 22484 + 803 = 23287
Step 30: 23287 + 803 = 24090
Step 31: 24090 + 803 = 24893
Step 32: 24893 + 803 = 25696
Step 33: 25696 + 803 = 26499
Step 34: 26499 + 803 = 27302
Step 35: 27302 + 803 = 28105
Step 36: 28105 + 803 = 28908
Step 37: 28908 + 803 = 29711
Step 38: 29711 + 803 = 30514
Step 39: 30514 + 803 = 31317
Step 40: 31317 + 803 = 32120
Step 41: 32120 + 803 = 32923
Step 42: 32923 + 803 = 33726
Step 43: 33726 + 803 = 34529
Step 44: 34529 + 803 = 35332
Step 45: 35332 + 803 = 36135
Step 46: 36135 + 803 = 36938
Step 47: 36938 + 803 = 37741
Step 48: 37741 + 803 = 38544
Step 49: 38544 + 803 = 39347
Step 50: 39347 + 803 = 40150
Step 51: 40150 + 803 = 40953
Step 52: 40953 + 803 = 41756
Step 53: 41756 + 803 = 42559
Step 54: 42559 + 803 = 43362
Step 55: 43362 + 803 = 44165
Step 56: 44165 + 803 = 44968
Step 57: 44968 + 803 = 45771
Step 58: 45771 + 803 = 46574
Step 59: 46574 + 803 = 47377
Step 60: 47377 + 803 = 48180
Step 61: 48180 + 803 = 48983
Step 62: 48983 + 803 = 49786
Step 63: 49786 + 803 = 50589
Step 64: 50589 + 803 = 51392
Step 65: 51392 + 803 = 52195
Step 66: 52195 + 803 = 52998
Step 67: 52998 + 803 = 53801
Step 68: 53801 + 803 = 54604
Step 69: 54604 + 803 = 55407
Step 70: 55407 + 803 = 56210
Step 71: 56210 + 803 = 57013
Step 72: 57013 + 803 = 57816
Step 73: 57816 + 803 = 58619
Step 74: 58619 + 803 = 59422
Step 75: 59422 + 803 = 60225
Step 76: 60225 + 803 = 61028
Step 77: 61028 + 803 = 61831
Step 78: 61831 + 803 = 62634
Step 79: 62634 + 803 = 63437
Step 80: 63437 + 803 = 64240
Step 81: 64240 + 803 = 65043
Step 82: 65043 + 803 = 65846
Step 83: 65846 + 803 = 66649
Step 84: 66649 + 803 = 67452
Step 85: 67452 + 803 = 68255
Step 86: 68255 + 803 = 69058
Step 87: 69058 + 803 = 69861
Step 88: 69861 + 803 = 70664
Step 89: 70664 + 803 = 71467
Step 90: 71467 + 803 = 72270
Step 91: 72270 + 803 = 73073
Step 92: 73073 + 803 = 73876
Step 93: 73876 + 803 = 74679
Step 94: 74679 + 803 = 75482
Step 95: 75482 + 803 = 76285
Step 96: 76285 + 803 = 77088
Step 97: 77088 + 803 = 77891
Step 98: 77891 + 803 = 78694
Step 99: 78694 + 803 = 79497
Step 100: 79497 + 803 = 80300
Step 101: 80300 + 803 = 81103
Step 102: 81103 + 803 = 81906
Step 103: 81906 + 803 = 82709
Step 104: 82709 + 803 = 83512
Step 105: 83512 + 803 = 84315
Step 106: 84315 + 803 = 85118
Step 107: 85118 + 803 = 85921
Step 108: 85921 + 803 = 86724
Step 109: 86724 + 803 = 87527

So, 803*109 = 87527