A large hotel has three types of rooms: regular, large, and suites. Today they need to clean 240 regular rooms, 120 large rooms, and 31 suites. The standard time to clean the regular rooms is 12 minutes, for the large rooms is 17.3 minutes, and is 22 minutes for the suites. The cleaning staff works for 7 hours per day. The staff cleans all the room types. Do not include commas in your answer and enter percentages as decimal points. How many staff members they need to assign to cleaning today? What is their utilization?