OK, let's work through this together. We're starting with 763 and we're going to multiply it by 3, which means we add 763 to itself 3 times.
Step 1: 0 + 763 = 763
Step 2: 763 + 763 = 1526
Step 3: 1526 + 763 = 2289

So, 763*3 = 2289