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

Ex Output:
19.316


Ex Input:
[164.048, 94.225, 164.003, -19.198, 47.156, 4.59, 170.668, 156.371, -13.172, -27.61]

Ex Output:
74.108


Ex Input:
[163.76, 231.835, 67.267, 47.862, -56.846, 200.885]

Ex Output:

109.127