HELP ASAP [EOQ MODEL], please answer with clear steps

Suppose you are managing a certain product in a retailing store. This product is ordered from a supplier that charges $5 shipping fee every time you place an order, and the unit cost of this product is $10. The daily demand for this product is 12 units, and no stock-out is allowed. Your retailing store uses 20% interest rate to account for the cost of holding the product, i.e., the annual unit holding cost of the product is 20% of the value (unit cost) of the product. To minimize the total cost, how frequent should you order from your supplier? Answer this question using EOQ model. You do not need to round the ordering quantity or ordering interval length