I am trying to set up a time card that I downloaded from the templates page
on MS. I like the format of the one that I have, but this is what I want it
to do:

Currently it is set up to calculate time for the week as streight time, i.e.
56.4 hours for the week.

What I would like it to do is when the total number of hours reaches 40,
then anything over that goes into another cell for the number of over-time
hours.

Is there a formula that anyone knows that I can use for this, or a function?