Can someone please tell me at what price one must be selling "Open Table" SaaS service to restaurants (and to how many of them) to receive $59MM in revenue ? Ho

Can someone please tell me at what price one must be selling "Open Table" SaaS service to restaurants (and to how many of them) to receive $59MM in revenue ? How many restaurants are there in San Francisco, Sillicon Valley, entire U.S.A. ?