A medical clinic is focused on patients from 0 to 15 years of age. The average patient visit requires 10 minutes of front-office staff to process paperwork, bills, and check-out. The average visit also required 20 minutes of physician time. The office sees an average of 80 patients per day. The office operates for 6 hours per day and seeks to maintain 10% capacity cushion. Calculate the number of staff members and physicians needed.