I don't know how to calculate the total amount of retained earnings for #2.

Laker Incorporated's fiscal year-end is December 31, 2021. The following is an adjusted trial balance as of December 31. Credit Debit $ 10,400 31,000 22,000 Accounts Cash Supplies Prepaid Rent Accounts Payable Notes Payable Common Stock Retained Earnings Dividends Service Revenue Salaries Expense Advertising Expense Rent Expense Utilities Expense Totals $ 1.400 14,000 32,000 7,400 2,400 55,600 18,400 11,400 8,400 6,400 $110,400 $110,400 Required: 1. Prepare the necessary closing entries. (If no entry is required for a particular transaction/event, select "No Journal Entry Required" in the first account field.) View transaction list View Journal entry worksheet No General Journal Debit Credit Date December 31, 2021 1 55,600 Service Revenue Retained Earnings 55,600 2 December 31 2021 44,600 Retained Earnings Salaries Expense Advertising Expense Rent Expense Utilities Expense 18,400 11,400 8,400 6,400 3 December 31 2021 2.400 Retained Earnings Dividends 2,400 2. Calculate the ending balance of Retained Earnings. Retained earnings 3. Prepare a post-closing trial balance Credit LAKER INCORPORATED Post-Closing Trial Balance December 31, 2021 Accounts Debit Cash $ 10,400 Supplies 31,000 Prepaid Rent 22,000 Accounts Payable Notes Payable Common Stock Retained Earnings $ 1,400 14,000 32,000 16,000 Totals 63,400 $ 63,400