Bozarth Business Machines (BBM) has analyzed the value of implementing a lock box system. The firm anticipates revenues of $630 million with an average invoice of $1,500. BBM borrows at 12% and has made an arrangement with Old Second Bank to manage a lock box for $.24 per check and 0.06% of total receipts. BBM has estimated that the lock box will save $200,000 annually. How many days does BBM expect the system will save in the collection process?