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]: [157.423, -98.775, -67.748, 25.759, 24.697, 150.289, -68.457, 212.57, -9.355]
[A]: 36.267

[Q]: [41.212, 221.072, 226.666, 3.688, 180.239, 142.767, 184.012, 63.249]
[A]: 132.863

[Q]: [174.54, 146.255, 25.722, 197.448]
[A]:
135.991