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.

Q: [-7.775, 55.997, 216.046]

A: 88.089
****
Q: [71.91, 41.513]

A: 56.712
****
Q: [133.239, -64.924]

A:
34.158
****