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: [-34.026, 86.773, 149.194, 228.14]

Output: 107.52


Input: Consider Input: [110.444, 23.089, -6.235, 112.579, 31.292, 190.857, 58.854, 148.587, 163.706, -5.219]

Output: 82.795


Input: Consider Input: [78.182, 42.666, -76.123, -79.665, -76.476, 201.452, 76.318, 226.382, 49.449]


Output: 49.132