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: [215.854, -43.532, 51.416]

A: 74.579
****
Q: [135.807, 205.755, 191.805]

A: 177.789
****
Q: [44.288, 229.923, -56.068]

A:
72.714
****