Excel says that the formula I entered is too long...
I have many spreadsheets with various data and I need the formulae to fet
information from all my spreadsheets but it is too long...

I have made a list of all my spreadsheet tab names...
is it possible to have a short formula, with excel using this list of tab
names?

e.g. I have 3 spreadsheets 'A','B','C'. I need the sum of all A5 cells in
each of the spreadsheets. The conventional formula will be:
Sum(A!A5;b!A5;c!A5).

If there are many spreadsheets with longer names and a morecomplicated
function imagine how frustrating it can get!

Is it possible to use one formula with variable spreadsheet instead of
including the spreadsheet names in hte formula?

Thank you