I can not figure out how to do the following:

I am trying to calculate the amount a time someone spends on the phone
making calls. Let's say they made 99 calls, average call lasts 1 minute and
21 seconds and they sat 8 appointments.

When I enter 1:21 and format the cell as mm:ss is appears as 21:00 and in
the formula line it shows as 1:21:00 AM. When I enter the formula to figure
the amount of time was spent on the phone I used B6*E6 (calls made x avg
call time)and my total time appears like 13:39:00. See below.

Date Calls Made Appt Set Avg Call Time Total Time Spent on Phone
24-Apr 99 8 21:00 13:39:00

I know I am missing something simple but can not figure this out. I would
appreciate any help anyone can offer. This is making me crazy!

Thanks!