Let's roll up our sleeves and solve this. We have 318 and we're going to multiply it by 5, essentially adding 318 to itself 5 times.
Step 1: 0 + 318 = 318
Step 2: 318 + 318 = 636
Step 3: 636 + 318 = 954
Step 4: 954 + 318 = 1272
Step 5: 1272 + 318 = 1590

So, 318*5 = 1590