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: [199.153, 182.13, -7.832, -60.259]

Output: 78.298


Input: Consider Input: [108.822, 139.139, 130.938, 100.996, 155.361, 8.752, 221.639, -12.877]

Output: 106.596


Input: Consider Input: [159.994, 6.945, -84.819, 56.486, 218.218, 242.23]


Output: 99.842


