Current Attempt in Progress Shamrock Express reports the following costs and expenses in June 2022 for its delivery service. Indirect materials used $5,770 Drivers' salaries $14,400 Depreciation on delivery equipment 10,060 Advertising 4,180 Dispatcher's salary 4,500 Delivery equipment repairs 270 Property taxes on office building 800 Office supplies 585 CEO's salary 10,800 Office utilities 900 Gas and oil for delivery trucks 1,960 Repairs on office equipment 170 Determine the total amount of (a) delivery service (product) costs and (b) period costs. Delivery service (product) costs Period costs $ $