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:
[10.724, -65.993, 107.56, 154.38, 117.135, 114.495, 11.544]

Ex Output:
64.264


Ex Input:
[-3.302, 23.685, 69.661, 74.979, -46.96]

Ex Output:
23.613


Ex Input:
[233.232, -98.555, 86.99, 130.061, 242.125, 224.964, -4.266, 52.033, 155.198]

Ex Output:

113.531