Current Attempt in Progress Splish Brothers Express reports the following costs and expenses in June 2022 for its delivery service. Indirect materials used $7,460 Drivers' salaries $18,560 Depreciation on delivery equipment 12,920 Advertising 5,480 Dispatcher's salary 5,800 Delivery equipment repairs 348 Property taxes on office building 1,060 Office supplies 754 CEO's salary 13.920 Office utilities 1,160 Gas and oil for delivery trucks 2,480 Repairs on office equipment 222 Determine the total amount of (a) delivery service (product) costs and (b) period costs. Delivery service (product) costs Period costs $ $