OK, let's crack this. We're given 548 and our task is to multiply it by 4. Essentially, we'll be adding 548 to itself 4 times.
Step 1: 0 + 548 = 548
Step 2: 548 + 548 = 1096
Step 3: 1096 + 548 = 1644
Step 4: 1644 + 548 = 2192

So, 548*4 = 2192