Please provide formula and rough solution

30. STRONG Co., Ltd. has annual sales of 45,000 water coolers with an ordering cost of 15,000 baht per time. The company bought a water cooler at a price of 31,550 baht per unit. There is a storage cost and a financial opportunity cost of 9% per year of the value of the water cooler that is kept in stock (annual carrying cost). Would like to know how many units of water chiller should the company order from the manufacturer at a time in order to save the most money? (Economic Order Quantity) EOQ=... Machine (2 decimal places ) If the marketing department forecasts that the quantity of goods to be produced and sold will increase by another 20% from the original set by other factors remaining constant. I would like to know how many water coolers a company should order at a time in order to save the most money (Economic Order Quantity). EOQ=.. Machine (2 decimal places )