Two thousand bars that are 3.25 inches (81 mm) in diameter and 12 inches (300 mm) long are to be turned down to 2.75-inch (69-mm) diameters. Heavy cuts followed by a light finishing cut are to be used. For finishing, the feed is 0.005 inch (0.125 mm), the cutting speed is 300 feet per minute (average cutting speed, 90 m/min.), and the depth of cut is 0.07 inch (1.75 mm). Two roughing cuts (two passes) are required, where the cutting speed is only 200 feet per minute (average cutting speed, 60 m/min.) and the feed is 0.01 inch (0.25 mm). Calculate the overall production time when the time taken to return the tool to the beginning of cut is 15 seconds and the load/unload time is 2 minutes. What is MRR in the 1st rough turning?