I have a call database that includes a field for length of call. I have
created a query that includes employee, date, and length of call.

I need to calculate the average call length per employee and as a whole. I
found one post that suggested the following:
"To store time intervals you should store them as integers that represent
the number of hours or minutes or seconds, etc.. and then you can perform
whatever math you like. The results can then be converted to the hh:nn:ss
format for display. "

How is this accomplished?

Lori