please help! im so confused on how to finish this! please show all the work as well! TIA!

The Ferre Publishing Company has three service departments and two operating departments. Selected data from a recent period on the five departments follow: he company allocates service department costs by the step-down method in the following order: Administration (number of mployees), Janitorial (space occupied), and Maintenance (hours of press time). equired: sing the step-down method, allocate the service department costs to the operating departments. (Please enter allocations from lepartment as negative and allocations to a department as positive. The line should add across to zero. Do not round atermediate calculations.)