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: [-75.664, 192.225, 2.107, -86.22, -51.11]

Output: -3.732


Input: Consider Input: [-38.715, 205.647, 66.034, 49.8, -92.051, 111.017, 149.689]

Output: 64.489


Input: Consider Input: [8.845, -28.978, -50.591, -2.116, 237.651, 247.451]


Output: 68.71