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: [64.523, 131.207, -30.223, -95.659]

Output: 17.462


Input: Consider Input: [69.271, -57.742, 121.719, 103.57, 217.286, 234.702, 24.344]


Output: 101.879