Ivanhoe Corporation had 682,200 common shares outstanding on January 1, 2020. On March 1, 2020, Ivanhoe issued 154,800 shares. On September 1, Ivanhoe repurchased and cancelled 67,800 shares. Calculate Ivanhoe's weighted average number of shares outstanding for the year ended December 31, 2020. (Round answer to O decimal places, e.g. 5,275.) shares Weighted average number of shares outstanding