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: [-96.229, 200.453]

Output: 52.112


Input: Consider Input: [-65.295, 113.842, -82.683, 235.996, 143.686, 31.127, 135.386, 217.657, -87.331]

Output: 71.376


Input: Consider Input: [-97.961, 179.397, 33.679]


Output: 38.372