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: [15.491, 60.283, 240.958, 155.995, 35.585, -55.875, 82.379, 142.503, 95.176, 85.281]

Output: 85.778


Input: Consider Input: [-89.748, 174.768, -88.393, -95.667, 30.082, -64.834, -2.043]


Output: -19.405