Let's roll up our sleeves and solve this. We have 389 and we're going to multiply it by 8, essentially adding 389 to itself 8 times.
Step 1: 0 + 389 = 389
Step 2: 389 + 389 = 778
Step 3: 778 + 389 = 1167
Step 4: 1167 + 389 = 1556
Step 5: 1556 + 389 = 1945
Step 6: 1945 + 389 = 2334
Step 7: 2334 + 389 = 2723
Step 8: 2723 + 389 = 3112

So, 389*8 = 3112