help please

Vitro Corporation has two service departments, Service Department A and Service Department and cont department Department Service Department Operatint Departrent Service Service Operating Department Department Department Operating Departat Departmental costs Allocation base A Allocation base B $31,280 4,000 6,000 555,640 1.000 2,000 $161,490 26,000 30,000 $399,250 19,000 2,000 The company uses the step down method to allocate service department costs to operating department Service Department com echtest on the best wocnon Department costs are allocated second on the basis of a location base B Required Allocate the service department costs to the operating departments using the step-down method