please show calculations in an organized manor, there are varying answers on this app already so please explain workings!

Linkup Systems, which provides investors with computerized information about stock prices, is considering the establishment of a lockbox system with its bank. The firm receives daily remittances of $1.5 million and could earn 9% on any funds freed up through faster collections. Required: If the lockbox system can save 2 days in the collection process, and the firm's bankers will charge $200,000 per year to operate the lockbox system, is it worth it to establish the system