Hello, I desperately need help on this question, please.

$($Solving for i$)$ You are considering investing in a security that will pay you $$$$2,000$ in $28$ years.

a$.$If the appropriate discount rate is $12$ percent$,$ what is the present value of this$$ investment?

b$.$Assume these investments sell for $$$$535$ in return for which you receive $$$$2,000$ in $28$ years. What is the rate of return investors earn on this investment if they buy it for $$$$535?$