Required information [The following information applies to the questions displayed below.] The following information was reported in the December 31 financial statements of National Airways, Incorporated (listed alphabetically, amounts in millions). 2. Prepare a statement of retained earnings for the year ended December 31. TIP: Assume the balance in Retained Earnings was $5,370 (million) at January 1. (Enter your answers in millions (i.e., 10,000,000 should be entered as 10.).)