Please show work step by step so I can understand! thank you

At Dot Com, a large retailer of popular books, demand is constant at 17,000 books per year. The cost of placing an order to replenish stock is $75, and the annual cost of holding is $3.00 per book. Stock is received 2 working days after an order has been placed. No backordering is allowed. Assume 250 working days a year.

a. Dot Com's optimal order quantity is _______ books. (Enter your response rounded to the nearest whole number.)

b. The optimal number of orders per year is _______ orders. (Enter your response rounded to the nearest whole number.)

c. The optimal interval (in working days) between orders is _____ days. (Enter your response rounded to one decimal place.)

d. The demand during lead time is ______ books. (Enter your response rounded to the nearest whole number)

e. The reorder point is ______ books. (Enter your response rounded to the nearest whole number)

f. The inventory position immediately after an order has been placed is ______ books. (Enter your response rounded to the nearest whole number)