please help with the second part. I cannot figure this out.

Common Stockholders' Profitability Analysis A company reports the following: Net income $290,000 Preferred dividends 11,600 Average stockholders' equity 2,230,769 Average common stockholders' equity 1.338,462 Determine () the retum on stockholders' equity and (b) the return on common stockholders' Equity, If required, round your answers to one decimal place, a. Return on Stockholders' Equity 13 b. Return on Common Stockholders' Equity