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:
[-44.354, 8.74, 34.514, 207.685]

Ex Output:
51.646


Ex Input:
[159.965, 172.082]

Ex Output:
166.024


Ex Input:
[-93.376, 88.178, 1.636, 191.438, 110.227, 110.362, -90.095]

Ex Output:

45.481