$($Payback period, NPV$,$ PI$,$ and IRR calculations$)$ You are considering a project with an initial cash outlay of $$80,000$ and expected free cash flows of $$20,000$ at the end of each year for $5$ years. The

required rate of return for this project is $6$ percent.

a$.$ What is the project's payback period?

b$.$ What is the project's NPV$?$

c$.$ What is the project's $Pl?$

d$.$ What is the project's IRR?

a$.$ The project's payback period is $4$ years. $($Round to two decimal places.$)$

b$.$ The project's NPV is $$.($Round to the nearest cent.$)$