A retailer uses continuous review method to manage its inventory. A certain product has a daily demand of

$25$

$$units; the retailer operates the store

$360$

$$days a year. The purchase price of the product is $

$40$

; holding cost is determined to be

$15$

$\%$

$$of cost

$.$

$$Ordering cost is determined to be $

$93\mathrm{.}4$

$.$

$$Do

$/$

answer the following.