In this task you will be given a list of numbers and you need to find the mean (average) of that list. The mean of a list can be found by summing every number in the list then dividing the result by the size of that list. The output should be rounded to 3 decimal places.

Input: Consider Input: [30.7, 241.916, 245.677, -26.708, 212.446, 81.786, 208.412, 237.096, 155.359]

Output: 154.076


Input: Consider Input: [127.522, 232.86, 46.593]

Output: 135.658


Input: Consider Input: [162.922, -4.429, 113.035, -71.728]


Output: 49.95