An item has a fix cost of replenishment of $1000. The per-unit wholesale price of the item is $50. The annual holding cost is estimated based on a 20% interest rate. The daily demand is normally distributed with a mean of 200 units and a standard deviation of 10 units. The lead time from the supplier is normally distributed with a mean of 10 days and standard deviation of 2 days. A service level of 97.5% is desired. Please help the manager determine a good (Q, r) policy for this item using your knowledge on (Q, r) models.

Quick computing currently sells 12 million computer chips each year at a price of $19 per chip. it is about to introduce a new chip, and it forecasts annual sales of 22 million of these improved chips at a price of $24 each. however, demand for the old chip will decrease, and sales of the old chip are expected to fall to 6 million per year. the old chips cost $10 each to manufacture, and the new ones will cost $14 each. what is the proper cash flow to use to evaluate the present value of the introduction of the new chip? (enter your answer in millions.)