Sure thing, let's get straight to it. We start with 141 and we're going to multiply it by 7, which means adding 141 to itself 7 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

So, 141*7 = 987