Ltd. at December 31, 2021: Income tax expense Interest expense Interest payable Land 188,770 Long-term investments 30,970 Mortgage payable 103,000 Operating expenses 157,680 Prepaid insurance 1,500 Retained earnings, January 1 117,520 Service revenue 186,040 Supplies 1,340 Calculate net income and the ending balance of retained earnings at December 31, 2021. Net income Retained Earnings $