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: [-96.182, -37.177, 130.645, -44.92, -12.78, 90.335, -99.791, -11.926, 217.275]

Output: 15.053


Input: Consider Input: [179.144, 114.883, -6.86, 137.104, 4.024, 55.61, 169.274, -60.246, 66.322, -92.91]

Output: 56.634


Input: Consider Input: [246.735, -32.796, 24.225, 130.226, 154.003, 133.547, -69.625, 193.862, 198.93, 176.592]


Output: 115.57