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: [20.796, 39.383, -26.46, -27.224, 89.591, 87.502, 211.781, 127.87, 223.38]

Output: 82.958


Input: Consider Input: [66.037, 30.958, 124.853]

Output: 73.949


Input: Consider Input: [-83.355, -43.208]


Output: -63.282


