OK, let's crack this. We're given 515 and our task is to multiply it by 5. Essentially, we'll be adding 515 to itself 5 times.
Step 1: 0 + 515 = 515
Step 2: 515 + 515 = 1030
Step 3: 1030 + 515 = 1545
Step 4: 1545 + 515 = 2060
Step 5: 2060 + 515 = 2575

So, 515*5 = 2575