A total of 26,000 forged parts must be produced in the press department during the next 8 days. Hydraulic presses will be used to complete the job and the cycle time is 35sec. Each press must be set up with a punch-and-die set before production starts. Setup time is 3 hr. How many presses must be devoted to this production during the next 8 days, if there are 7.3hr of available time per machine per day