Cannon sells 22mm lens for digital cameras. The manager considers using a continuous review policy to manage the inventory of this product and he is planning for the reorder point and the order quantity in 2021 taking the inventory cost into account. The annual demand for 2021 is forecasted as 520+10*the last digit of your student number and expected to be fairly stable during the year. Other relevant data is as follows: The standard deviation of the weekly demand is 9.
Using your student number calculate the annual demand.