OK, let's crack this. We're given 634 and our task is to multiply it by 5. Essentially, we'll be adding 634 to itself 5 times.
Step 1: 0 + 634 = 634
Step 2: 634 + 634 = 1268
Step 3: 1268 + 634 = 1902
Step 4: 1902 + 634 = 2536
Step 5: 2536 + 634 = 3170

So, 634*5 = 3170