On April 1, Kingbird Company buys 4,080 (5% interest) shares of Polk common stock for $61,200. On October 1, Kingbird sells 1,020 shares of Polk stock for $20,910. Prepare journal entries for the purchase and sale of the Polk common stock. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. Record journal entries in the order presented in the problem. List all debit entries before credit entries.)