Without delay, let's solve this. We've got 108 and we will be multiplying it by 4, that is, adding 108 to itself 4 times.
Step 1: 0 + 108 = 108
Step 2: 108 + 108 = 216
Step 3: 216 + 108 = 324
Step 4: 324 + 108 = 432

So, 108*4 = 432