Let's roll up our sleeves and solve this. We have 863 and we're going to multiply it by 11, essentially adding 863 to itself 11 times.
Step 1: 0 + 863 = 863
Step 2: 863 + 863 = 1726
Step 3: 1726 + 863 = 2589
Step 4: 2589 + 863 = 3452
Step 5: 3452 + 863 = 4315
Step 6: 4315 + 863 = 5178
Step 7: 5178 + 863 = 6041
Step 8: 6041 + 863 = 6904
Step 9: 6904 + 863 = 7767
Step 10: 7767 + 863 = 8630
Step 11: 8630 + 863 = 9493

So, 863*11 = 9493