I have added the earnings per share calculation for reference. I don't know where to get the average number of shares outstanding. Please answer the entire question and show the work. thank you!

(\% Your answer is incorrect. Calculate the earnings per share (average of 410,000 shares outstanding for the year) for 2020 . (Round answer to 2 decimal places, e.g. 2.55.) Earning per share $ per share Net income - preferred dividends Average number of shares outstanding Cullumber Medical manufactures hospital beds and other institutional furniture. The company's comparative balance sheet and income statement for 2019 and 2020 follow