Let's get this math done. We have 817 and we're going to multiply it by 8. This is the same as taking 817 and adding it to itself 8 times.
Step 1: 0 + 817 = 817
Step 2: 817 + 817 = 1634
Step 3: 1634 + 817 = 2451
Step 4: 2451 + 817 = 3268
Step 5: 3268 + 817 = 4085
Step 6: 4085 + 817 = 4902
Step 7: 4902 + 817 = 5719
Step 8: 5719 + 817 = 6536

So, 817*8 = 6536