Calculate NPV$,$ discount rate is $7($Enter negative amounts using either a negative sign preceding the number e$.$g$.-45$ or parentheses e$.$g$.(45).$ Do not round

discount factors. Round other intermediate calculations and final answers to $2$ decimal places, e$.$g$.15\mathrm{.}25.)$

NPV of System $1$ is $

and NPV of System $2$ is $