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: [5.703, -17.365, 21.827, 38.836, 5.17, -15.533]

Output: 6.44


Input: Consider Input: [-98.163, -66.763, 149.544, -89.893, -10.155]

Output: -23.086


Input: Consider Input: [121.698, -70.886, 150.933, 233.596]


Output: 108.835