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: [72.326, -74.6, 127.566, -54.848, 198.529, -44.061, -28.155]

Output: 28.108


Input: Consider Input: [29.292, 193.26, -48.646]

Output: 57.969


Input: Consider Input: [163.85, 231.97, 242.912, 109.111, 91.756]


Output: 167.92


