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: [89.776, -37.895, -45.315, 75.805, 144.052, 150.156]

Output: 62.763


Input: Consider Input: [108.26, -20.681, 127.479, -29.352]

Output: 46.426


Input: Consider Input: [61.496, -87.882, -32.053, 15.704, 163.473, 98.315, 249.559]


Output: 66.945