Let's roll up our sleeves and solve this. We have 947 and we're going to multiply it by 15, essentially adding 947 to itself 15 times.
Step 1: 0 + 947 = 947
Step 2: 947 + 947 = 1894
Step 3: 1894 + 947 = 2841
Step 4: 2841 + 947 = 3788
Step 5: 3788 + 947 = 4735
Step 6: 4735 + 947 = 5682
Step 7: 5682 + 947 = 6629
Step 8: 6629 + 947 = 7576
Step 9: 7576 + 947 = 8523
Step 10: 8523 + 947 = 9470
Step 11: 9470 + 947 = 10417
Step 12: 10417 + 947 = 11364
Step 13: 11364 + 947 = 12311
Step 14: 12311 + 947 = 13258
Step 15: 13258 + 947 = 14205

So, 947*15 = 14205