IM$\mathrm{.}73$

Porter's purchases specialized glass for their custom mirrors for $$250$ for each case of $30$ units. Annual demand is estimated to be $3,350$ units per year. It costs $$65$ to process and receive an order with a $$4\mathrm{.}63$ holding cost per unit per year.

What is the economic order quantity $($EOQ$)$ for purchases of glass $($units$,$ not cases$)?($Display your answer to the nearest whole number.$)$