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: [54.908, 25.798]

Output: 40.353


Input: Consider Input: [-66.735, 23.822, -34.5, 118.327, 242.333]

Output: 56.649


Input: Consider Input: [92.503, 2.126, 37.354, -98.515, -5.996, 210.896, -86.373]


Output: 21.714