Balance sheets and income statements for Costco Wholesale Corporation follow. $/$r$/$n Costco Wholesale Corporation Consolidated Balance Sheets $($$ millions, except par value and share data$)$ September $2,2018$ September $3,2017$ Current assets $/$r$/$n In $2018,$ Costco's return on equity $($ROE$)$ is $26\mathrm{.}59\%$ and its return on net operating assets $($RNOA$)$ is $26\mathrm{.}52\%.$ Assume that the combined federal and state statutory tax rate is $22\%.$ a$.$ Compute net nonoperating expense $($NNE$)$ and net operating profit after tax $($NOPAT$).$ Round to the nearest whole number, if applicable. $2018$ NNE $ $\backslash$times million $2018$ NOPAT $\{\backslash$times million b$.$ Compute net nonoperating obligations $($NNO$)$ for $2018$ and $2017.[2018$ NNO $ $\backslash$times million; $2017$ NNO $ $\backslash$times million $]$ c$.$ Compute financial leverage $($FLEV$).$ Round answer to four decimal places. $2018$ FLEV d$.$ Compute NNEP and Spread. Round answers to two decimal places $($example: $0\mathrm{.}12345=12\mathrm{.}35\%).2018$ NNEP $\backslash$times $\%2018$ Spread $\backslash$times $\%$ e$.$ Compute the noncontrolling interest ratio $($NCI ratio$).$ Round answer to four decimal places. $2018$ NCI Ratio f$.$ Confirm the relation: ROE$=[$RNOA$+($FLEV$\backslash$times Spread $)]\backslash$times NCI ratio. $\mathrm{.}2018$ ROE$=\%=[[**+1\backslash$times $])]$ X $\backslash$times