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: [231.352, -24.17]

Output: 103.591


Input: Consider Input: [74.43, 138.738, 114.237, 138.845, 188.957, 103.103, -43.988, -68.085, 157.274]

Output: 89.279


Input: Consider Input: [-96.771, -38.864, 115.586, 152.573]


Output: 33.131