Swifty Corporation, has 3800 shares of 4%, $50 par value, cumulative preferred stock and 100000 shares of $1 par value common stock outstanding at December 31, 2021, and December 31, 2020. The board of directors declared and paid an $7500 dividend in 2020. In 2021, $39600 of dividends are declared and paid. What are the dividends received by the preferred stockholders in 2021