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

Output: 159.626


Input: Consider Input: [39.88, 58.489, 225.343, 105.008, 210.581, 35.577]

Output: 112.48


Input: Consider Input: [225.347, 163.556, 187.985, -13.244]


Output: 140.911