Finding Return on Investment

You can use MathML to find return on investment by using the following syntax:

<Calculation>
  <Expression className="PacificEdgeSoftware.Data.Calculations.Programmatic
     .ROI,SerenaSoftware.Data"/>
  <RHSVariable name="cMonthly-Discount-Rate" identifier="rate" />
  <RHSVariable name="%RangeCalculation%NPV%Benefits-Net%CURRENCY
     %CALENDAR_MONTH%StartMS%END%" identifier="netcost" />
  <RHSVariable name="%RangeCalculation%NPV%Cost-Total%CURRENCY
     %CALENDAR_MONTH%StartMS%END%" identifier="totalcosts" />
</Calculation>