The following is a partially completed lower section of a departmental expense allocation spreadsheet for brickland. it reports the total amounts of direct and indirect expenses for the four departments. purchasing department expenses are allocated to the operating departments on the basis of purchase orders. maintenance department expenses are allocated based on square footage. purchasing maintenance fabrication assembly operating costs $32,000 $18,000 $96,000 $62,000 no. of purchase orders 16 4 sq. ft. of space 3,300 2,700 required: compute the amount of purchasing department expense to be allocated to assembly.