Multiply two columns of data into a new column in pivot table

I have exported some employee data including hours worked and hourly rate. I have attached an excel spreadsheet with a pivot table constructed form the data. I would like to be able to multiply the Grand Total of hours by the Hourly Rate to get a salary total in the far right column. Additionally I suspect it will be included in the column totals giving me a grand total at the bottom of the page as well as each department total. I am not sure if this is possible but I hope so. If you have any additional questions let me know. Thank You.

Thank you so much for the information. That helps. However I have noticed that the Departments Totals are incrementing from one department to another. For example, Dept. 1 total is in the Dept. 8 total along with the employee totals and all totals are in Dept. 203 total. Other than that it is great. I am not sure how to fix this problem myself so if you don't mind I would appreciate showing me how to handle this problem. Thank You.

Awesome, Thank you so much for your help! Have a great day!