Due to the problems with international suppliers, a premium milk company Leitssimo decides to produce of its premium products in its current production plant. The annual demand of one of its premium products is 1680 packs. The production rate is 900 packs per month. The cost per pack is $200 and it costs the company $50 to start the production. The inventory holding cost is computed with respect to an annual interest rate of 15%.

Calculate the optimal production quantity for the premium product and find the maximum inventory level according to the optimal policy