Without delay, let's solve this. We've got 747 and we will be multiplying it by 15, that is, adding 747 to itself 15 times.
Step 1: 0 + 747 = 747
Step 2: 747 + 747 = 1494
Step 3: 1494 + 747 = 2241
Step 4: 2241 + 747 = 2988
Step 5: 2988 + 747 = 3735
Step 6: 3735 + 747 = 4482
Step 7: 4482 + 747 = 5229
Step 8: 5229 + 747 = 5976
Step 9: 5976 + 747 = 6723
Step 10: 6723 + 747 = 7470
Step 11: 7470 + 747 = 8217
Step 12: 8217 + 747 = 8964
Step 13: 8964 + 747 = 9711
Step 14: 9711 + 747 = 10458
Step 15: 10458 + 747 = 11205

So, 747*15 = 11205