Packer Concrete Company pours concrete slabs for single-family dwellings. Wolff Construction Company, which operates outside Packer's normal sales territory, asks Packer to pour 50 slabs for Wolff's new development of homes. Packer has the capacity to build 370 slabs and is presently working on 150 of them. Wolff is willing to pay only $2,640 per slab. Packer estimates the cost of a typical job to include unit-level materials, $830; unit-level labor, $440; and an allocated portion of facility-level overhead, $860. Required Calculate the contribution to profit from the special order. Contribution to profit