Sure thing! We've got 671 and we're gonna multiply it by 5. That's the same as adding 671 to itself 5 times.
Step 1: 0 + 671 = 671
Step 2: 671 + 671 = 1342
Step 3: 1342 + 671 = 2013
Step 4: 2013 + 671 = 2684
Step 5: 2684 + 671 = 3355

So, 671*5 = 3355