write the steps in hand written

Question : the operation manger for Shadyside saving & loan orders cash from her home office for her very popular big bucks automated teller machine, which only dispense $ 100 bills, she estimate that this machine dispenses an average of 10997 bills per month, and that carrying a bill in inventory costs for 10 precent of its value annually. She knows that each order for these bills costs $ 300 lead time is 8 days. Assuming a 30-day month, at what point should bills be reordered (ROP) ?