Petromax Enterprises uses a continuous review inventory control system for one of its SKUs. The following information is available on the item. The firm operates $48$ weeks in a year. Refer to

$>$ Demand $=52,000$ units$/$year

$>$ Ordering cost $=$$$\frac{38\mathrm{.}50}{?}$ order

$>$ Holding cost $=$$$\frac{4\mathrm{.}50}{?}$ unit$/$year

$>-$ Average lead time $=9$ weeks