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:
[1.435, 246.462, 5.433, -3.093, 31.948, 113.344, 41.816, 43.437, -93.129, 116.292]

Ex Output:
50.395


Ex Input:
[-47.309, -46.076, 191.14, -6.032, 4.858]

Ex Output:
19.316


Ex Input:
[25.376, -54.91, 109.488, -46.844, 38.465, 240.978, 145.35]

Ex Output:

65.415