A company reports the following:

Net income $$260,000$

Preferred dividends $10,400$

Average stockholders' equity $1,911,765$

Average common stockholders' equity $1,166,355$

Determine $($a$)$ the return 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 fill in the blank $1$

$\%$

b$.$ Return on Common Stockholders$$ Equity fill in the blank $2$

$\%$