Zachary Concrete Company pours concrete slabs for single-family dwellings. Lancing Construction Company, which operates outside Zachary's normal sales territory, asks Zachary to pour 43 slabs for Lancing's new development of homes. Zachary has the capacity to build 350 slabs and is presently working on 170 of them. Lancing is willing to pay only $2,520 per slab. Zachary estimates the cost of a typical job to include unit-level materials, $890; unit-level labor, $460; and an allocated portion of facility-level overhead, $1,260. Required Calculate the contribution to profit from the special order. Should Zachary accept or reject the special order to pour 43 slabs for $2,520 each