Use the following Statement of Stockholders' Equity to answer this question: Common Stock Additional Paid in Capital Preferred Stock Retained Treasury Earnings Stock Balance, 12/31/2019 $6,000 $ 275,000 $25,000 $100,000 ($8,750) 1/15/2020 Common Stock Issuance $ 900 $ 39,000 1/31/2020 Treasury Stock Reissue ($800) $2,500 12/30/2020 Dividends Declared ($3,000) 2020 Net Income $32,000 Balance, 12/31/2020 $6,900 $ 313,200 $25,000 $ 129,000 ($6,250) The Common Stock has a $0.03 par value per share; the Preferred Stock has $100 par value per share. The Treasury stock was purchased on 12/5/2017 for $1.25 per share. How many shares of the Common Stock were outstanding at 12/31/2020