Hi Elkar,
Here is a variation that allows you to insert rows anywhere
below A2 and above A71, including the immediately above
the row with the formulas, without having to change the formula.

A61: =SUM(A2:OFFSET(A71,-1,0)) instead of =SUM(A2:A70)

Read more about use and need for OFFSET at
http://www.mvps.org/dmcritchie/excel/offset.htm

If you are simply trying to get the average of sixty items
more less you might look instead to the AVERAGE Worksheet Function.
---
HTH,
David McRitchie, Microsoft MVP - Excel [site changed Nov. 2001]
My Excel Pages: http://www.mvps.org/dmcritchie/excel/excel.htm
Search Page: http://www.mvps.org/dmcritchie/excel/search.htm

"Elkar" wrote in message ...
Let's assume you want to add cells A1 through A50. Use this formula:

=sum(a1:a50)/60


"Chrisj20" wrote:

I'm trying to create a formula that adds a column and then divides its total
by 60? Simple you would think but I cant get anything to work. Help!