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: [3.556, 65.177]

Output: 34.366


Input: Consider Input: [112.141, 221.013, 75.929, -19.73, 151.257]

Output: 108.122


Input: Consider Input: [64.067, -27.164, 40.172, -71.946, -49.466, 90.466]


Output: 7.688


