Let's get this math done. We have 5 and we're going to multiply it by 7. This is the same as taking 5 and adding it to itself 7 times.
Step 1: 0 + 5 = 5
Step 2: 5 + 5 = 10
Step 3: 10 + 5 = 15
Step 4: 15 + 5 = 20
Step 5: 20 + 5 = 25
Step 6: 25 + 5 = 30
Step 7: 30 + 5 = 35

So, 5*7 = 35