Paper Submarine Manufacturing is investigating a lockbox system to reduce its collection time. It has determined the following: Average number of payments per day Average value of payment Variable lockbox fee (per transaction) Daily interest rate on money market securities 420 $ 1,010 $ 30 .068% The total collection time will be reduced by four days if the lockbox system is adopted. a. What is the PV of adopting the system? (Do not round intermediate calculations and round your answer to the nearest whole dollar amount, e.g., 32.) b. What is the NPV of adopting the system? (Do not round intermediate calculations and round your answer to the nearest whole dollar amount, e.g., 32.) c. What is the net cash flow per day from adopting the lockbox system? Per check? (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.)