Consider the following three-station work cell process for making a product that must go through one of the two machines at station 1 before proceeding to station 2. If the firm operates 6 hours per day, 8 days per week, 20 days per month, what is the monthly capacity (in units) of this work cell? (Answer to the nearest whole number)

Station 1 Machine A 20 min/unit Station 2 Station 3 12 min/unit 15 min/unit Station 1 Machine B 20 min/unit