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: [157.423, -98.775, -67.748, 25.759, 24.697, 150.289, -68.457, 212.57, -9.355]

Output: 36.267


Input: Consider Input: [126.453, 169.516, 109.837, 208.695, 113.906, 56.894, 171.345, 126.81]

Output: 135.432


Input: Consider Input: [29.292, 193.26, -48.646]


Output: 57.969