OK, let's work through this together. We're starting with 546 and we're going to multiply it by 4, which means we add 546 to itself 4 times.
Step 1: 0 + 546 = 546
Step 2: 546 + 546 = 1092
Step 3: 1092 + 546 = 1638
Step 4: 1638 + 546 = 2184

So, 546*4 = 2184