I am attempting to create a Report or Form that will perform a simple task.

I already created a form for reporting Incidents and have input data into this.  I would like to create some type of report or Form that pulls from that data and run a simple calculation.  

I would like the form to pull all Incidents in a date range and count them.  Take that amount an divide it by a user input number.  Output that answer into a text box or something on the same page.

Number of Incidents in Date Range / User input number and output answer

Is this possible in Creator, unfortunately I don't have any HTML knowledge and created the form because it is pretty basic.

Any help is greatly appreciated.  

Thanks