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: [-95.427, -98.447]

Output: -96.937


Input: Consider Input: [9.828, 248.054, 20.871, 99.749, 52.797, -86.856, 65.438, 53.627]

Output: 57.939


Input: Consider Input: [223.683, -95.267]


Output: 64.208