Interest Calculator
The Interest Calculator is a simple calculator to use but provides the power and functionality for complex calculations. It will calculate unknown values for future value (accumulation), distributions and loan values, and cost to wait. It is often compared to an HP-11c in its features, but much easier in its functionality.
To use the Interest Calculator,
1)Select the type of calculation desired:

This selection will change the prompts.
2)Enter the values for the prompts on the left hand side, except the one to be calculated.
3)Finally, place the cursor on the field to be calculated, and click on the 'Calculate Cursor Line' button (or press Ctrl-F10). (Note that if the button is disabled, the field cannot be calculated.)
Additional Information
More detail can be found in the links below:
1.Future Value Calculations
Explanation of the calculator/prompts
2.Account Distributions and Loans