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: [183.332, -51.581, -15.684, 140.965, 37.376, 37.734, 71.356]

Output: 57.643


Input: Consider Input: [82.748, 43.804, -13.469, 226.705, -7.478]

Output: 66.462


Input: Consider Input: [149.739, -36.895, 224.494, 183.888, 76.457, 207.401, -53.838, 249.378, 161.735, 216.549]


Output: 137.891