Let's roll up our sleeves and solve this. We have 541 and we're going to multiply it by 3, essentially adding 541 to itself 3 times.
Step 1: 0 + 541 = 541
Step 2: 541 + 541 = 1082
Step 3: 1082 + 541 = 1623

So, 541*3 = 1623