how do i calculate doller value to indian rupee in c#

in this function first pass the dollor value than you pass the value of in one dollor how many ruppes
like "double dollorValue= getDollorToRupee(5000,56);"

private double getDollorToRupee(double DollOrValue, double OneDollarEqulal_Rupee)
        {
            double indianRupee = 0;
            return indianRupee = DollOrValue * OneDollarEqulal_Rupee;
        }