Let's get this math done. We have 101 and we're going to multiply it by 5. This is the same as taking 101 and adding it to itself 5 times.
Step 1: 0 + 101 = 101
Step 2: 101 + 101 = 202
Step 3: 202 + 101 = 303
Step 4: 303 + 101 = 404
Step 5: 404 + 101 = 505

So, 101*5 = 505