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: [231.057, 71.527, 201.799, -5.17, -14.963, -35.693]

Output: 74.76


Input: Consider Input: [172.084, 126.948, 90.757]

Output: 129.93


Input: Consider Input: [-40.605, 159.566, -11.706]


Output: 35.752