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: [80.346, 228.37, 18.978, -42.02]

A: 71.419
****
Q: [198.475, -38.691]

A: 79.892
****
Q: [247.481, 135.26, 53.385, 172.394]

A:
152.13
****