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: [248.385, -40.468, -97.132]

Output: 36.928


Input: Consider Input: [-58.447, 213.433, 187.859, 103.704]

Output: 111.637


Input: Consider Input: [17.792, -87.519, 126.087, -52.176, 157.829, -45.206, 173.143, 91.596]


Output: 47.693