Hi All

I know this should be simple but heres the deal. I have an expected completion amount per day. I have a list of outstanding items in a column starting from Day 10 + down to day 2.
I need the Expected completion to be taken off the outstanding items working down.
e.g. If i have an Expected Completion of 20 i would need to following outcome
Outstanding items After Expected completions taken off
Day 10+ 2 0
Day 9 1 0
Day 8 2 0
Day 7 10 0
Day 6 11 5