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: [43.362, 111.151, 162.709, 43.974, 184.165, 238.15, 181.927]

Output: 137.92


Input: Consider Input: [54.715, 180.963, 239.308, 175.084, 147.044, 136.262, 184.009]

Output: 159.626


Input: Consider Input: [-9.355, 74.387, 197.588, 158.546, 169.913, 142.404, 9.344, 104.466, 23.51, -12.47]


Output: 85.833