The following information was reported in the December $31$ financial statements of National Airways, Incorporated $($listed alphabetically, amounts in millions$).$

Accounts Payable $$4,015$

Accounts Receivable $780$

Aircraft Fuel Expense $10,700$

Cash $3,170$

Common Stock $1,320$

Dividends $55$

Equipment $16,770$

Income Tax Expense $390$

Interest Expense $330$

Landing Fees Expense $5,100$

Notes Payable $7,050$

Repairs and Maintenance Expense $3,200$

Retained Earnings $($as of December $31)9,115$

Salaries and Wages Expense $3,580$

Supplies $780$

Ticket Revenues $27,100$

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 $1$