Without delay, let's solve this. We've got 515 and we will be multiplying it by 3, that is, adding 515 to itself 3 times.
Step 1: 0 + 515 = 515
Step 2: 515 + 515 = 1030
Step 3: 1030 + 515 = 1545

So, 515*3 = 1545