Let's roll up our sleeves and solve this. We have 912 and we're going to multiply it by 12, essentially adding 912 to itself 12 times.
Step 1: 0 + 912 = 912
Step 2: 912 + 912 = 1824
Step 3: 1824 + 912 = 2736
Step 4: 2736 + 912 = 3648
Step 5: 3648 + 912 = 4560
Step 6: 4560 + 912 = 5472
Step 7: 5472 + 912 = 6384
Step 8: 6384 + 912 = 7296
Step 9: 7296 + 912 = 8208
Step 10: 8208 + 912 = 9120
Step 11: 9120 + 912 = 10032
Step 12: 10032 + 912 = 10944

So, 912*12 = 10944