$2.$ what excel formula can i use, that would result in net cash flow from the investment, considering cost and future cash flows, using this data: desired return $\%,$ cost$,$ cash inflows for each of the $10$ years, residual value, total cash flows, pv net cash flows $($everything is in row $4,$ desired return $\%$ is c$,$ cost is d$,$ year $1-10$ is e$-$n$,$ residual value is o$,$ total cash flows is p$,$ pv net cash flows is q$)$