Hi everyone,
I have a spreadsheet numbered from 1-31. This represents the maximum of 31
days in a month. However, all months do not contain 31 days. This is an
example of what I am working with: (day and value columns)

1 100
2 100
3 100
.. 100
.. 100
.. 100
28 100
29 0
30 0
31 0

Total 3100 (fixed constant-no matter if there are 28, 29, 30, or 31 days in
the month).

This example is for February (non-leap year) and the month has 28 days. How
do I calculate the 28th day to equal the total of (3100 - the sum of values
from day 1- day 28?) and appear in the cell for day 28? (leaving the cells
for 29, 30, and 31 blank).

(this would need to work also for days 29, 30, and 31).


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Thank you all again, Regards!
Electricbluelady