freddyH / Finance_PresentValue / 0.1.0
PV(rate, NPER, PMT, FV, type) Returns the present value of an investment resulting from a series of regular payments. 
  •  rate defines the interest rate per period. 
  • nper is the total number of periods. *pmt is the regular payment made per period. 
  • fv (optional) defines the future value remaining after the final installment has been made. 
  • type (optional) defines whether the payment is due at the beginning (1) or the end (0) of a period.