Alright, let's solve this math problem step by step. First, we have the number 518. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 3. So, we're going to take the number 518 and add it to itself 3 times.
Step 1: 0 + 518 = 518
Step 2: 518 + 518 = 1036
Step 3: 1036 + 518 = 1554

So, 518*3 = 1554