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: [36.34, -16.727, 140.541, 127.454, -94.11, -74.52, 96.179, -9.121, -65.54]

Output: 15.611


Input: Consider Input: [-7.057, 122.729, -78.932, 52.502, 191.819, 80.994, 29.505, -10.501]

Output: 47.632


Input: Consider Input: [162.348, -13.274, 229.093, 137.644]


Output: 128.953