Presented here are summarized data from the balance sheets and income statements of Wiper Incorporated:

WIPER INCORPORATEDCondensed Balance SheetsDecember $31,2023,2022,2021($in millions$)202320222021$Current assets$ $759$$ $971$$ $833$Other assets$2,4231,9301,729$Total assets$ $3,182$$ $2,901$$ $2,562$Current liabilities$ $587$$ $840$$ $733$Long$-$term liabilities$1,5781,025901$Stockholders$$ equity$1,0171,036928$Total liabilities and stockholders' equity$ $3,182$$ $2,901$$ $2,562$

WIPER INCORPORATEDSelected Income Statement and Other DataFor the Years Ended December $31,2023$ and $2022($in millions$)20232022$Income statement data:$$Sales$ $3,060$$ $2,923$Operating income$306320$Interest expense$9475$Net income$221216$Other data:$$Average number of common shares outstanding$42\mathrm{.}347\mathrm{.}7$Total dividends paid$ $60\mathrm{.}0$$ $53\mathrm{.}3$

Required:

Calculate return on investment, based on net income and average total assets, for $2023$ and $2022.$

Calculate return on equity for $2023$ and $2022.$

Calculate working capital and the current ratio for each of the past three years.

Calculate earnings per share for $2023$ and $2022.$

If Wiper's stock had a price$/$earnings ratio of $15$ at the end of $2023,$ what was the market price of the stock?

Calculate the cash dividend per share for $2023$ and the dividend yield based on the market price calculated in part e$.$

Calculate the dividend payout ratio for $2023.$

Assume that accounts receivable at December $31,2023,$ totaled $$319$ million. Calculate the number of days' sales in receivables at that date.

Calculate Wiper's debt ratio and debt$/$equity ratio at December $31,2023$ and $2022.$

Calculate the times interest earned ratio for $2023$ and $2022.$