Let's roll up our sleeves and solve this. We have 580 and we're going to multiply it by 4, essentially adding 580 to itself 4 times.
Step 1: 0 + 580 = 580
Step 2: 580 + 580 = 1160
Step 3: 1160 + 580 = 1740
Step 4: 1740 + 580 = 2320

So, 580*4 = 2320