Let's get this math done. We have 146 and we're going to multiply it by 4. This is the same as taking 146 and adding it to itself 4 times.
Step 1: 0 + 146 = 146
Step 2: 146 + 146 = 292
Step 3: 292 + 146 = 438
Step 4: 438 + 146 = 584

So, 146*4 = 584