Ivanhoe Limited had 41,400 common shares outstanding on January 1, 2023. On March 1, 2023, Ivanhoe issued 19800 shares in exchange for equipment. On July, Ivanhoe repurchased and cancelled 11,700 shares. On October 1, 2023, Ivanhoe declared a 4-for-1 stock split. Calculate the weighted average number of shares outstanding for Ivanhoe for the year ended December 31, 2023.