OK, let's work through this together. We're starting with 740 and we're going to multiply it by 3, which means we add 740 to itself 3 times.
Step 1: 0 + 740 = 740
Step 2: 740 + 740 = 1480
Step 3: 1480 + 740 = 2220

So, 740*3 = 2220