Laurin Limited had 42,000 common shares outstanding on January 1, 2023. On March 1, 2023, Laurin issued 20,000 shares in exchange for equipment. On July 1, Laurin repurchased and cancelled 10,000 shares. On October 1, 2023, Laurin declared and issued a 10% stock dividend. Calculate the weighted average number of shares outstanding for Laurin for the year ended December 31, 2023. Round to the nearest share.