Hi there! It sounds like you're having trouble calculating the average call length for your call center agents. Don't worry, I'm here to help!

The reason you're getting a DIV/0 error when using the AVERAGE function is because Excel is treating your call duration values as text instead of numbers. To fix this, you'll need to convert the text values to numbers that Excel can work with.

Here's how you can do it:

1. Insert a new column next to your Call Duration column.
2. In the first cell of the new column, enter the following formula:
   Formula:

   =TIMEVALUE(A1) 

   (Assuming your Call Duration column is in column A)
3. Copy the formula down to all the cells in the new column.
4. Now you should have a column of numbers that represent the call duration in seconds.
5. Use the AVERAGE function on the new column to get the average call length.

Here's an example formula you can use for step 5: (Assuming your new column is in column B)

That should do the trick!