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: [72.755, 233.932, 245.785, 92.401]

Output: 161.218


Input: Consider Input: [5.703, -17.365, 21.827, 38.836, 5.17, -15.533]

Output: 6.44


Input: Consider Input: [127.967, 42.005, 168.717, 172.051, -22.167]


Output: 97.715


