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: [-44.354, 8.74, 34.514, 207.685]

Output: 51.646


Input: Consider Input: [171.805, 71.031, 36.192, 28.948, -58.045, 53.843]

Output: 50.629


Input: Consider Input: [9.749, 164.453]


Output: 87.101