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: [169.737, 56.872, 102.557, -9.77]

Output: 79.849


Input: Consider Input: [-96.229, 200.453]

Output: 52.112


Input: Consider Input: [41.702, 234.497, -89.388, 190.012, 139.982, 154.209, -33.875, 102.547, 35.48]


Output: 86.13