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: [127.522, 232.86, 46.593]

Output: 135.658


Input: Consider Input: [-73.074, 87.743, 221.875, 126.604, 31.513, 196.863]

Output: 98.587


Input: Consider Input: [249.224, 40.768, 197.558, 206.868, 119.722, -23.108, 122.159, 166.539, 14.859]


Output: 121.621


