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: [159.291, 160.61, -50.992, 34.053, 78.883, 222.627, 105.95]

Output: 101.489


Input: Consider Input: [15.293, 221.056, 241.387, 81.3, 102.644, 146.885, -33.65, -36.56, -69.176]

Output: 74.353


Input: Consider Input: [130.0, 183.57, 56.516, -51.415, 124.571, 48.255]


Output: 81.916