can you please show me how the retained earnings was calculated?

no dividend and no retained earnings available in this problem and I'm very confused how this came out as an answer. please help me understand it

Mint, Inc. Income Statement Data Table - X For the Year Ended December 31, 2018 Revenue Service revenue $ 68,000 Accounts receivable $ 6,000 Cash $ 15,000 Note payable 13,000 Accounts payable 7,000 Expenses Salaries expense $ 16,000 Retained earnings 2 Advertising expense 5,000 Rent expense 4,400 16,000 Service revenue Salaries expense Equipment 68,000 32,000 5,000 80,000 Common stock Advertising expense Insurance expense Insurance expense 10.000 10,000 Rent expense 4,400 Utilities expense Utilities expense 1,700 1,700 Supplies 1,000 Print 37,100 Done Total expenses $ 30,900 Net income Mint, Inc. Statement of Retained Earnings For the Year Ended December 31, 2018 Retained earnings, December 31, 2017 $ 39,100 30,900 Add Net income Subtotal 70,000 20,000 Less Dividends $ 50,000 Retained earnings, December 31, 2018