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:
[179.836, 115.658, -58.613, 29.591, 198.709]

Ex Output:
93.036


Ex Input:
[61.761, 6.557, -93.386, -74.064, 33.4, 141.295]

Ex Output:
12.594


Ex Input:
[221.679, 16.334, 157.622, 118.18, 168.849, 157.974, 37.636, 249.085, -10.276, 70.5]

Ex Output:

118.758