OK, let's crack this. We're given 809 and our task is to multiply it by 63. Essentially, we'll be adding 809 to itself 63 times.
Step 1: 0 + 809 = 809
Step 2: 809 + 809 = 1618
Step 3: 1618 + 809 = 2427
Step 4: 2427 + 809 = 3236
Step 5: 3236 + 809 = 4045
Step 6: 4045 + 809 = 4854
Step 7: 4854 + 809 = 5663
Step 8: 5663 + 809 = 6472
Step 9: 6472 + 809 = 7281
Step 10: 7281 + 809 = 8090
Step 11: 8090 + 809 = 8899
Step 12: 8899 + 809 = 9708
Step 13: 9708 + 809 = 10517
Step 14: 10517 + 809 = 11326
Step 15: 11326 + 809 = 12135
Step 16: 12135 + 809 = 12944
Step 17: 12944 + 809 = 13753
Step 18: 13753 + 809 = 14562
Step 19: 14562 + 809 = 15371
Step 20: 15371 + 809 = 16180
Step 21: 16180 + 809 = 16989
Step 22: 16989 + 809 = 17798
Step 23: 17798 + 809 = 18607
Step 24: 18607 + 809 = 19416
Step 25: 19416 + 809 = 20225
Step 26: 20225 + 809 = 21034
Step 27: 21034 + 809 = 21843
Step 28: 21843 + 809 = 22652
Step 29: 22652 + 809 = 23461
Step 30: 23461 + 809 = 24270
Step 31: 24270 + 809 = 25079
Step 32: 25079 + 809 = 25888
Step 33: 25888 + 809 = 26697
Step 34: 26697 + 809 = 27506
Step 35: 27506 + 809 = 28315
Step 36: 28315 + 809 = 29124
Step 37: 29124 + 809 = 29933
Step 38: 29933 + 809 = 30742
Step 39: 30742 + 809 = 31551
Step 40: 31551 + 809 = 32360
Step 41: 32360 + 809 = 33169
Step 42: 33169 + 809 = 33978
Step 43: 33978 + 809 = 34787
Step 44: 34787 + 809 = 35596
Step 45: 35596 + 809 = 36405
Step 46: 36405 + 809 = 37214
Step 47: 37214 + 809 = 38023
Step 48: 38023 + 809 = 38832
Step 49: 38832 + 809 = 39641
Step 50: 39641 + 809 = 40450
Step 51: 40450 + 809 = 41259
Step 52: 41259 + 809 = 42068
Step 53: 42068 + 809 = 42877
Step 54: 42877 + 809 = 43686
Step 55: 43686 + 809 = 44495
Step 56: 44495 + 809 = 45304
Step 57: 45304 + 809 = 46113
Step 58: 46113 + 809 = 46922
Step 59: 46922 + 809 = 47731
Step 60: 47731 + 809 = 48540
Step 61: 48540 + 809 = 49349
Step 62: 49349 + 809 = 50158
Step 63: 50158 + 809 = 50967

So, 809*63 = 50967