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: [147.664, 167.561, 244.106, -42.988, 9.425, 79.806, 239.58]

Output: 120.736


Input: Consider Input: [-49.786, 238.124, -20.697, 32.014]

Output: 49.914


Input: Consider Input: [68.799, 211.687, 209.496, 216.91, -85.425, 40.557, -40.235, 146.223, 113.474]


Output: 97.943