National Manufacturing Company had the following account balances for the quarter ending December 31,2020 unless otherwise provided:

Work-in-process inventory (January 1) $ 140,400

Work-in-process inventory (March 31) 171,000

Finished goods inventory (January 1) 540,000

Finished goods inventory (March 31) 510,000

Direct materials used 378,000

Indirect materials used 84,000

Direct manufacturing labor 480,000

Indirect manufacturing labor 186,000

Property taxes on manufacturing plant building 28,800

Salespersons' company vehicle costs 12,000

Depreciation of manufacturing equipment 264,000

Depreciation of office equipment 123,600

Miscellaneous plant overhead 135,000

Plant utilities 92,400

General office expenses 305,400

Marketing distribution costs 30,000

Required:

a. Prepare a cost of goods manufactured schedule for the quarter.

b. Prepare a cost of goods sold schedule for the quarter.