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: [135.575, 134.352, 209.54, 199.614, 87.027, 215.933, 49.266, 167.288, 164.589]

Output: 151.465


Input: Consider Input: [-96.229, 200.453]

Output: 52.112


Input: Consider Input: [171.709, -26.553, 174.856, 190.356, -85.339]


Output: 85.006