Without delay, let's solve this. We've got 513 and we will be multiplying it by 3, that is, adding 513 to itself 3 times.
Step 1: 0 + 513 = 513
Step 2: 513 + 513 = 1026
Step 3: 1026 + 513 = 1539

So, 513*3 = 1539