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: [47.595, -7.171, 4.333, 160.025, 152.275, 90.23, 128.643, 145.181]

Output: 90.139


Input: Consider Input: [169.737, 56.872, 102.557, -9.77]

Output: 79.849


Input: Consider Input: [-19.64, 5.69, 102.211, 159.062, 7.744, 242.03, 141.431, 105.364, 40.338]


Output: 87.137