Let's get this math done. We have 576 and we're going to multiply it by 3. This is the same as taking 576 and adding it to itself 3 times.
Step 1: 0 + 576 = 576
Step 2: 576 + 576 = 1152
Step 3: 1152 + 576 = 1728

So, 576*3 = 1728