OK, let's crack this. We're given 586 and our task is to multiply it by 8. Essentially, we'll be adding 586 to itself 8 times.
Step 1: 0 + 586 = 586
Step 2: 586 + 586 = 1172
Step 3: 1172 + 586 = 1758
Step 4: 1758 + 586 = 2344
Step 5: 2344 + 586 = 2930
Step 6: 2930 + 586 = 3516
Step 7: 3516 + 586 = 4102
Step 8: 4102 + 586 = 4688

So, 586*8 = 4688