XYZ Industries produces cast bronze valves for use in offshore oil platforms. Currently, XYZ produces 1600 valves per day. The 20 machinists at XYZ who manufacture the valves work from 7 AM until 4 PM with 30 minutes off from work for lunch. The machinists are also given two breaks from work, each of 15 minutes breaks, one during the morning work session and the other during the afternoon work session. Lunch and work breaks are unpaid. XYZ Industries is in a competitive industry and needs to increase productivity to stay competitive. The management of XYZ feels that a 20 percent increase over the current valve production is needed. However, they realize that the 20 percent increase will not be possible without a change in working conditions, so they institute a change of work hours. The new schedule calls for their 20 machinists to work from 7:30 AM until 4:30 PM, during which they can take off one hour from work (unpaid, as in the former schedule) at any time of their choosing. After this change, valve production increased to 1800 valves per day. Rounded to two decimal places, what is the numerical value of daily labor productivity per hour