OK, let's crack this. We're given 457 and our task is to multiply it by 4. Essentially, we'll be adding 457 to itself 4 times.
Step 1: 0 + 457 = 457
Step 2: 457 + 457 = 914
Step 3: 914 + 457 = 1371
Step 4: 1371 + 457 = 1828

So, 457*4 = 1828