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: [123.511, 37.811, 249.595, -25.324]

Output: 96.398


Input: Consider Input: [-6.992, -36.177, -95.203, 87.142]

Output: -12.808


Input: Consider Input: [7.429, -17.94, 89.924, 22.548, 208.879, 73.573, -95.78, -82.677, 223.019]


Output: 47.664