Roberts Company reported net income of $3,804 million in 2021. The weighted average number of common shares outstanding during 2021 was 1,662 million shares. Roberts paid $120 million in dividends on preferred stock, which was convertible into 60 million shares of common stock. How much is the diluted earnings per share amount for 2021?

Optional answer:

	$2.21
	$2.30
	$2.23
	$2.18