At December 31, 2017, Bridgeport Company had 450,000 shares of common stock issued and outstanding, 300,000 of which had been issued and outstanding throughout the year and 150,000 of which were issued on October 1, 2017. Net income for 2017 was $1,900,000, and dividends declared on preferred stock were $350,000. Compute Bridgeports earnings per common share.