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: [123.511, 37.811, 249.595, -25.324]

Output: 96.398


Input: Consider Input: [77.498, 234.955, 184.005, -48.344, 113.167]

Output: 112.256


Input: Consider Input: [-52.02, 100.638, -20.981, 195.412, -57.479, -8.839, 82.687, 230.54, 113.853]


Output: 64.868