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:
[246.744, 206.484, 194.841]

Ex Output:
216.023


Ex Input:
[-8.87, 232.908, 141.714, -47.559, 161.192, 203.441]

Ex Output:
113.804


Ex Input:
[-75.147, 188.529, -53.717]

Ex Output:

19.888