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:
[203.976, 106.117, 62.128, -89.428, 180.453, 155.566, 213.868]

Ex Output:
118.954


Ex Input:
[205.118, 101.679, 202.802, 144.052, -2.468, 239.04, -94.46, 214.193, 193.626]

Ex Output:
133.731


Ex Input:
[45.213, 53.31, 191.443, -49.801, 170.298, 20.348, -70.266, 105.989, -34.239]

Ex Output:

48.033