Consider the following information from a company's unadjusted trial balance at December 31, 2018. All accounts have normal balances. Accounts Receivable Accounts Payable Cash Service Revenue Common Stock Equipment Insurance Expense Land Notes Payable, Due 2021 Notes Receivable, Matures 2019 Prepaid Insurance Rent Expense Retained Earning, January 1, 2018 Salaries and Wages Expense $ 6,400 745 1,890 7,970 5,900 6,800 495 5,700 5,900 1,390 495 1,495 8,040 3,890 What is the total of the debit side of the unadjusted trial balance