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

Ex Output:
184.507


Ex Input:
[166.542, 216.326, 98.969, -96.779, 33.532]

Ex Output:
83.718


Ex Input:
[109.864, -87.797, 17.817, 48.35, 109.214]

Ex Output:

39.49