Making TOTAL from multiple sheets file

Hello,

i made Christmas presents list for my company departments. I added all filled lists into a one file and made total sheet. Because company I work for has over 50 departments I would like to make sum easily but i dont know how. I know in every sheet is cell with number of items on same place.

for example:

number of presents 1 is F12 in all sheets
number of present 2 is F13 etc.

Does anybody have any idea?

Thanks for any replies

If you want to sum the F cells from every sheet :
Select the cell where you want the sum
type =sum(
Select the first sheet tab
Hold down the Shift key
Select the last sheet tab
Select the cell you want so sum (F12)
Enter the closing parenthesis
OK
You should get something like =sum(Sheet1:sheet10!f12)
Cheers

Thank you very much