Shamrock Express reports the following costs and expenses in June 2022 for its delivery service. Indirect materials used Depreciation on delivery equipment Dispatcher's salary Property taxes on office building CEO's salary Gas and oil for delivery trucks Delivery service (product) costs LA $5,770 $ 10,060 4,500 800 10,800 1,960 Drivers' salaries Determine the total amount of (a) delivery service (product) costs and (b) period costs. Advertising Delivery equipment repairs Office supplies Office utilities Repairs on office equipment 41880 $14,400 4,180 270 585 900 170