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: [219.769, -36.26, 3.121, -22.5, 124.372]

Output: 57.7


Input: Consider Input: [-53.388, 31.309, 19.079, -16.926, 242.421, 210.599]

Output: 72.182


Input: Consider Input: [183.807, 55.27, 77.311]


Output: 105.463