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: [-66.387, 135.639, 182.921, 175.573, 105.67, -29.751, 156.67, 83.119, 19.538]

A: 84.777
****
Q: [74.601, 131.018, -45.91]

A: 53.236
****
Q: [53.391, 118.782, 102.742]

A:
91.638
****