Currently, it takes six days for Apsoft Corporation to receive, process, and Apsoft its customers' payments.

Currently, it takes six days for Apsoft Corporation to receive, process, and Apsoft its customers' payments. If it sets up a lockbox collection system, Apsoft estimates collection float would be reduced to two days. Apsoft receives an average of $125,000 in payments per day. If Apsoft has an opportunity cost of 12 percent, what is the maximum monthly charge it should pay for the lock box system?