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: [199.728, -96.25, -77.714]

Output: 8.588


Input: Consider Input: [-93.372, 58.665, 230.024, 208.635]

Output: 100.988


Input: Consider Input: [65.477, 203.95, 239.904, 37.795, 138.265, 159.3, -50.357]


Output: 113.476