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: [87.234, -30.861, 221.46, 120.15, -85.065, 67.024, 144.174, -64.546]

Output: 57.446


Input: Consider Input: [-4.749, 102.787, -45.229, 184.111, 221.888, 22.727, 20.887, 34.094]

Output: 67.065


Input: Consider Input: [241.472, 42.125, -92.855, 35.853, 185.609, 228.573, -67.395, -13.144, -53.452]


Output: 56.31