Sure thing! We've got 71 and we're gonna multiply it by 9. That's the same as adding 71 to itself 9 times.
Step 1: 0 + 71 = 71
Step 2: 71 + 71 = 142
Step 3: 142 + 71 = 213
Step 4: 213 + 71 = 284
Step 5: 284 + 71 = 355
Step 6: 355 + 71 = 426
Step 7: 426 + 71 = 497
Step 8: 497 + 71 = 568
Step 9: 568 + 71 = 639

So, 71*9 = 639