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: [84.142, -99.804]

Output: -7.831


Input: Consider Input: [-95.427, -98.447]

Output: -96.937


Input: Consider Input: [2.712, 102.631, 14.071, 89.237, 62.503]


Output: 54.231