okay so i tried everything and i know how to do this but this problem i don't know! I tried 14.18 but that didn't work.

$3.48

Explanation:

Net income ÷Shares of common stock outstanding + Preferred stock convertible shares of common stock.

Net income 6,800,000

Shares of common stock outstanding 1,200,000

Preferred stock convertible 750,000

Hence:

$6,800,000/ ($1,200,000 + $750,000)

=$6,800,000/$1,950,000

=$3.48

Therefore the diluted earnings per share for 2021 is $3.48