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: [75.879, 43.123]

Output: 59.501


Input: Consider Input: [194.964, 80.506, -41.268, 32.912, -21.6, 21.543, 69.269]

Output: 48.047


Input: Consider Input: [224.72, 31.99, -40.846, 78.166]


Output: 73.508