Fully vested incentive stock options for 53,000 shares of common stock at an exercise price of $43 were outstanding at the beginning of 2016. The market price of the stock averaged $49 during the year. If these options are exercised on March 1 of the current year by how many shares will the options increase the weighted-average number of shares outstanding when calculating diluted earnings per share? (Round your intermediate and final answers to nearest whole number.)