Assume an individual makes a lump sum investment at the beginning of year one of $2,435. The expected return on this investment is $9,897 (after tax) to be received as a single amount at the end of year 9. The investors discount rate, for an alternative safe investment, is 14.99 percent after tax. What is the net present value of the investment under consideration?

THE ANSWER IS 380.55 but my formulas aren't adding up. Please explain formulas the breakdown.