Let's get this math done. We have 874 and we're going to multiply it by 9. This is the same as taking 874 and adding it to itself 9 times.
Step 1: 0 + 874 = 874
Step 2: 874 + 874 = 1748
Step 3: 1748 + 874 = 2622
Step 4: 2622 + 874 = 3496
Step 5: 3496 + 874 = 4370
Step 6: 4370 + 874 = 5244
Step 7: 5244 + 874 = 6118
Step 8: 6118 + 874 = 6992
Step 9: 6992 + 874 = 7866

So, 874*9 = 7866