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: [171.439, 0.981, 42.253, 239.995, 129.938, -67.125, -69.565, -53.374, -51.357]

A: 38.132
****
Q: [116.074, 213.452, 86.981]

A: 138.836
****
Q: [193.506, 145.362, 144.533, -14.497, 22.442, -5.632, -5.134]

A:
68.654
****