Let's roll up our sleeves and solve this. We have 147 and we're going to multiply it by 4, essentially adding 147 to itself 4 times.
Step 1: 0 + 147 = 147
Step 2: 147 + 147 = 294
Step 3: 294 + 147 = 441
Step 4: 441 + 147 = 588

So, 147*4 = 588