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: [84.527, 159.538, -20.208, 42.181, -12.587, -86.549, 131.349, 63.615, 150.304]

Output: 56.908


Input: Consider Input: [51.02, -71.125, 178.19, -7.234, -99.571, -17.215]

Output: 5.677


Input: Consider Input: [150.437, -3.837, 129.078, -54.453, -99.098, 200.922, 5.328, 29.431, 145.114]


Output: 55.88