Kingbird Inc uses a calendar year for financial reporting. The company is authorized to issue 8,100,000 shares of $10 par common stock. At no time has Kingbird issued any potentially dilutive securities. Listed below is a summary of Kingbird's common stock activities. 1 2,030,000 203,000 2,200,000 2. Number of common shares issued and outstanding at December 31, 2018 Shares issued as a result of a 10% stock dividend on September 30, 2019 Shares issued for cash on March 31, 2020 Number of common shares issued and outstanding at December 31, 2020 A 2-for-1 stock split of Kingbird's common stock took place on March 31, 2021 3. 4,433,000 4. Compute the weighted average number of common shares used in computing earnings per common share for 2020 on the 2020 comparative income statement. shares