ahmadjoya

const PMT = (rate, nper, pv, fv, type) => {
    /*
     * rate   - interest rate per month
     * nper   - number of periods (months)
     * pv   - present value
     * fv   - future value
     * type - when the payments are due:
     *        0: end of the period, e.g. end of month (default)
     *        1: beginning of period
     */