Suppose the following financial information is available for Walgreen Company (in millions) Average common stockholders' equity Dividends declared for common stockholders Dividends declared for preferred stockholders Net income 2017 40 2016 $13,000.0 $11,700.0 395 550 1,900 2,200 Calculate the payout ratio and return on common stockholders' equity for 2017 and 2016. (Round answers to 1 decimal place, eg, 12.5%.) 2017 2016 Payout ratio Return on common stockholders' equity