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: [15.293, 221.056, 241.387, 81.3, 102.644, 146.885, -33.65, -36.56, -69.176]

Output: 74.353


Input: Consider Input: [87.234, -30.861, 221.46, 120.15, -85.065, 67.024, 144.174, -64.546]

Output: 57.446


Input: Consider Input: [-16.831, -79.159, -96.408, 235.189, -22.791, 216.258]


Output: 39.376