Sure thing! We've got 221 and we're gonna multiply it by 7. That's the same as adding 221 to itself 7 times.
Step 1: 0 + 221 = 221
Step 2: 221 + 221 = 442
Step 3: 442 + 221 = 663
Step 4: 663 + 221 = 884
Step 5: 884 + 221 = 1105
Step 6: 1105 + 221 = 1326
Step 7: 1326 + 221 = 1547

So, 221*7 = 1547