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: [207.165, 246.399, 44.821, -21.671]

Output: 119.178


Input: Consider Input: [48.122, -2.158, 12.547, -39.257, -62.936, 120.37, 133.697, 68.132, 93.801]

Output: 41.369


Input: Consider Input: [27.555, -5.84, 114.665, 4.729, 115.865, 51.116, -28.549, -57.693, -33.043, -83.201]


Output: 10.56