For the given cash flows, suppose the firm uses the NPV decision rule.

a$.$ At a required return of $8$ percent, what is the NPV of the project? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ At a required return of $20$ percent, what is the NPV of the project? $($A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

$\backslash$table$[[$a$.,$NPV$,],[$b$.,$NPV$,]]$