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: [99.278, 72.353, -21.292]

A: 50.113
****
Q: [59.251, 198.593]

A: 128.922
****
Q: [181.256, -78.191, 162.427, -90.527, 123.709, 248.073]

A:
91.124
****