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:
[96.706, 239.918, 73.299, 68.184, 233.512, -76.407]

Ex Output:
105.869


Ex Input:
[-45.826, -27.376, 126.782, -28.164, 213.819, 186.676]

Ex Output:
70.985


Ex Input:
[86.941, -5.064]

Ex Output:

40.939