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: [-27.722, -35.758, 83.995, -7.374, 60.825, 165.182]

Output: 39.858


Input: Consider Input: [-69.129, 32.725, -53.323, -4.397, 72.336]


Output: -4.358