OK, let's work through this together. We're starting with 588 and we're going to multiply it by 7, which means we add 588 to itself 7 times.
Step 1: 0 + 588 = 588
Step 2: 588 + 588 = 1176
Step 3: 1176 + 588 = 1764
Step 4: 1764 + 588 = 2352
Step 5: 2352 + 588 = 2940
Step 6: 2940 + 588 = 3528
Step 7: 3528 + 588 = 4116

So, 588*7 = 4116