How big is this parking lot in our community ?   It has fifty parking spaces .   So you guys should be always busy .   Why ?   I bet it is always full of cars .   Quite the contrary , sir . Plenty of the spaces here are free when people drive their cars out to work .   Ah ... I see .   We plan to rent some of them out at the hourly rates .   What is the hourly rate for a car like this ?   I am not sure . But it'll be at least ten yuan an hour .   How mush would it cost if someone parks here for one hour and ten minutes ?   That would be twenty yuan , sir . We charge only by the number of hours , no split of each hour .   That's expensive . 