OK, let's work through this together. We're starting with 754 and we're going to multiply it by 4, which means we add 754 to itself 4 times.
Step 1: 0 + 754 = 754
Step 2: 754 + 754 = 1508
Step 3: 1508 + 754 = 2262
Step 4: 2262 + 754 = 3016

So, 754*4 = 3016