OK, let's work through this together. We're starting with 799 and we're going to multiply it by 7, which means we add 799 to itself 7 times.
Step 1: 0 + 799 = 799
Step 2: 799 + 799 = 1598
Step 3: 1598 + 799 = 2397
Step 4: 2397 + 799 = 3196
Step 5: 3196 + 799 = 3995
Step 6: 3995 + 799 = 4794
Step 7: 4794 + 799 = 5593

So, 799*7 = 5593