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.

Ex Input:
[179.929, 180.162, -63.896, -56.366, 233.638]

Ex Output:
94.693


Ex Input:
[223.951, 2.518, 140.336, -38.799, 217.497, 212.153, 21.874]

Ex Output:
111.361


Ex Input:
[-82.456, 123.519, 249.576, -62.202, 175.773, -56.701, -43.633, 117.971, -5.26, 106.268]

Ex Output:

52.286