The clinic bills outpatient operations in one of 3 ways. First is for the operation which can be completed within thirty minutes; they charge $700 for this kind. Second kind needs up to 1 hour, and they charge $1050 for it. Third kind of operation takes up to two hours, and they charge $1400 for it. In the effort to decrease possibility of mistakes due to fatigue, clinic's 3 surgeons are each permitted to perform no more than 10 operations per day. Moreover, clinic only has two operating rooms, each of which can be utilized for eight hours per day. Find how many of each kind of operation must be performed (ideally) for hospital to maximize its revenue. Determine maximal revenue?