A college professor recorded the number of miles he drove in his car each week.He found that the distribution of this mileage was very close to a normal distribution and had an average of 236 miles with a standard deviation of 31 miles.What is the third quartile for the mileage driven by this professor each week?Put only a number(to 2 decimal places) in the box, no symbols or letters. Show your calculations on the answer sheet.