Let's roll up our sleeves and solve this. We have 934 and we're going to multiply it by 9, essentially adding 934 to itself 9 times.
Step 1: 0 + 934 = 934
Step 2: 934 + 934 = 1868
Step 3: 1868 + 934 = 2802
Step 4: 2802 + 934 = 3736
Step 5: 3736 + 934 = 4670
Step 6: 4670 + 934 = 5604
Step 7: 5604 + 934 = 6538
Step 8: 6538 + 934 = 7472
Step 9: 7472 + 934 = 8406

So, 934*9 = 8406