Let's roll up our sleeves and solve this. We have 141 and we're going to multiply it by 8, essentially adding 141 to itself 8 times.
Step 1: 0 + 141 = 141
Step 2: 141 + 141 = 282
Step 3: 282 + 141 = 423
Step 4: 423 + 141 = 564
Step 5: 564 + 141 = 705
Step 6: 705 + 141 = 846
Step 7: 846 + 141 = 987
Step 8: 987 + 141 = 1128

So, 141*8 = 1128