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: [227.601, -61.961, 78.822, -29.52, 126.039, -44.098, 112.374, -19.23, 69.758]

Output: 51.087


Input: Consider Input: [97.816, -78.424]

Output: 9.696


Input: Consider Input: [219.752, 12.175, 155.547, -76.39, -26.954, -38.903, 67.008, -96.989, 79.572]


Output: 32.758