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: [187.54, -56.697, 55.301, 235.071, 176.682, 103.554, -35.29, 84.215]

Output: 93.797

Input: Consider Input: [226.383, 37.978, 174.444, 117.212]

Output: 139.004

Input: Consider Input: [-23.309, -38.568]
Output: -30.938