Brea Corporations fiscal year-end is December 31, 2024. The following is a partial adjusted trial balance as of December 31. Accounts Debit Credit Retained Earnings $18,000 Dividends $1,800 Service Revenue 38,000 Interest Revenue 4,800 Salaries Expense 13,800 Rent Expense 4,800 Advertising Expense 1,800 Insurance Expense 9,800 Interest Expense 3,800 Required: 1. Prepare the necessary closing entries. 2. Calculate the ending balance of Retained Earnings