Need Help with a Weekday Formula

Hello Experts,

Hoping that someone can assist me with this Weekday formula that I need.

I have two columns, an Actual date and a Due date. I would like to see the difference between the two dates, but I only need the weekdays, not the entire 7 days.

I created a formula using the “Today()” function, but that gives me 7 days.

How can I get the number of days between Actual and Due date in Weekdays?

Here is my formula:

=IF(ISBLANK(P3),"",R3-TODAY())

Here are my two columns:

P3 R3
Actual Date Due Date

I am using Excel 2010, Office 7

Thank you. :-)