Setting up a query to give me a sum of dates from a collection of records in a month

[QualityNurse]

I have a table where someone can enter the date that a device was inserted and the date that the device was removed. I want to set up a query that will count how many days a device was present for a particular month. For example if there was one record that had a device inserted on 02/27/2014 and removed on 03/05/2014 and another record that had an insertion date of 02/28/2014 and a removal date of 03/10/2014 I would want to be able to run a query that would show me 3 days in February and 15 days in March. I am an access newbie so please make the answer as simple as possible

[June7]

Calculating the elapsed time between two dates is easy with DateDiff function.

Breaking that up when the period crosses months or years is not.

I am thinking this will require VBA code and a temp table.

[mrojas]

I'm not sure I understand how you arrived at 3 days in February when the insertion date is 2/27 or 2/28 or how you get 15 day for March? Could you elaborate?

[June7]

Total of 3 and 15 days for 2 devices. This gives a unit of device-days of service (like person-days of work).