6. The stockholders' equity section of the balance sheet of a company reveals the following information for the year ended December 31, 2019. No additional shares of preferred stock have been issued and no dividends were in arrears. Preferred Stock (6%, $20 par, cumulative, 5.000 shares authorized, 2,000 issued and outstanding) Common Stock ($5 par, 100,000 authorized, 80,000 issued, 75,000 outstanding) On December 31 of each of the following years, the company declared the following cash dividends: 2019 $0 2020 $5,500 2021 $8.750 Determine the total amount of dividends that the common stockholders received during the years 2019-2021