The sanding department of carla vista furniture company has the following production and manufacturing cost data for march $2022,$ the first month of operation. Production: $6,720$ units completed and transferred out; $2,880$ units in ending work in process are $100\%$ complete as to materials and $20\%$ complete as to coversion costs. Manufacturing costs: materials $$30,720$; labor $$20,160$; and overhead $$34,560.$prepare a cost report.