HAL Ltd$.$ Produces a line of high$-$capacity disk drives for mainframe computers. Housings are used at a fairly steady rate of $720$ per year. HAL can produce disk drive housings in its Hamilton, Ontario, plant at a rate of $150$ housings per month. The housings cost HAL $$85$ each to produce, and the setup cost for beginning a production run is $$700.$ Assume an annual interest rate of $28\%$ for determining the holding cost.