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:
[118.783, 191.64, 225.792, 160.903, 209.763, 39.225, 24.607]

Ex Output:
138.673


Ex Input:
[138.526, 60.81, 233.845, -33.602, 189.784, 13.888, 184.543, 53.635, 18.299, -87.132]

Ex Output:
77.26


Ex Input:
[243.697, 165.796, 114.518, 207.298, 191.227]

Ex Output:

184.507