At the beginning of 2019, Cooper Company has 340,000 shares of common stock and 50,000 shares of preferred stock outstanding. On April 1, 2019, Cooper sold an additional 30,000 shares of common stock an 5,000 shares of preferred stock. On July 1, 2019, Cooper declared and distributed a 10\% stock dividend (not a cash dividend, but a stock dividend) on its common stock. On October 1, 2019, Cooper repurchased 20,00 shares of common stock and retired them. Calculate the weighted average number of shares of common stock outstanding for 2019