Suppose that for an investment, $I is invested/paid now. Between Year m and Year n, $P is received per year with a growth rate of g% per year (i.e., $P is received in Year m). Express the net present value of the investment in terms of the aforementioned parameters if the discount rate is r%. Simplify the expression as much as possible.

Use the expression to compute the net present value of the investment if I = 1000, m = 7, n = 12, P = 400, g = 1 and r = 10.

Expression with calculation steps:

Answer for the net present value (two decimal places): ___________

Calculation steps: