Mark Achin sells $3,600$ electric motors each year. The cost of these is $$200$ each, and demand is constant throughout the year. The cost of placing an order is $$40,$ while the holding cost is $$20$ per unit per year. There are $360$ working days per year and the lead$-$time is $5$ days. At the moment Mark orders $200$ units each time he places an order. However an inventory analysis suggested using E$)$Q$.$ How much would Mark save if he usus EOQ? Assume there are no discounts offered so the total purchase cost is irrelevant in this case.