Sarasota Limited had 50,160 common shares on January 1, 2020. On April 1,5,988 shares were repurchased. On August 31, 10,800 shares were issued. (a1) Calculate the number of shares outstanding at December 31, 2020. Number of common shares outstanding (a2) Calculate the weighted average number of shares for 2020. (Do not round intermediate calculations.) Weighted average number of shares