Glen Co. uses a calendar year for financial reporting. At no time has the company issued any potentially dilutive securities. No common shares were issued during 2018. Additional information is shown below: Common shares issued and outstanding at 12/31/2018 400,000 Shares issued as a result of a 30% stock dividend on 6/30/2019 120,000 Shares issued for cash on 11/30/2019 280,000 Number of common shares issued and outstanding at 12/31/2019 800,000 The weighted-average number of common shares used in computing basic earnings per common share for 2018 on the 2019 comparative income statement was ________________ shares