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: [-78.906, 119.863, 44.561, 1.523]

Output: 21.76


Input: Consider Input: [150.321, 169.658, 221.448, 54.785, 160.245, 9.534, 78.865, 229.753, 225.969]

Output: 144.509


Input: Consider Input: [68.017, -84.821, -80.681, 153.794, 108.464, 0.734, -60.638, 141.255]


Output: 30.766