On January, 20X1, Aneth Company had 500,000 shares of common stock issued and outstanding. Aneth issued a 10 percent stock dividend on June 1, 20X1. On November 1, 20X1, Aneth reacquired 30,000 shares of its common stock as treasury stock. What number of shares should be used in computing basic earnings per share for the year ended December 31, 20X1