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: [-96.182, -37.177, 130.645, -44.92, -12.78, 90.335, -99.791, -11.926, 217.275]

Output: 15.053


Input: Consider Input: [234.404, 162.933, 178.375, 10.683, 181.727, -50.587, 169.507, -72.896, 168.06, 238.363]

Output: 122.057


Input: Consider Input: [146.976, -87.595, 35.33, 242.36, 18.668, 237.929, -84.004]


Output: 72.809