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: [-59.526, 55.871, 118.248, 197.073]

Output: 77.916


Input: Consider Input: [-17.604, 15.108, 34.328, -94.608]

Output: -15.694


Input: Consider Input: [-65.406, -30.983, 140.816, -56.619, 168.566]


Output: 31.275