OK, let's work through this together. We're starting with 748 and we're going to multiply it by 4, which means we add 748 to itself 4 times.
Step 1: 0 + 748 = 748
Step 2: 748 + 748 = 1496
Step 3: 1496 + 748 = 2244
Step 4: 2244 + 748 = 2992

So, 748*4 = 2992