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: [248.089, 9.064, -69.315, -16.093, 95.107, -73.12, 175.054, 52.865, 95.009]

Output: 57.407


Input: Consider Input: [227.404, 94.456, 233.241, 147.762, -31.667, -62.22, -93.912]

Output: 73.581


Input: Consider Input: [63.365, 30.236, 33.165, 178.655]


Output: 76.355