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.

[EX Q]: [-42.207, -46.667, 171.095]
[EX A]: 27.407

[EX Q]: [-96.903, -1.489, 182.083, 196.779, -67.602, 202.143, -20.354, -24.817, 194.439]
[EX A]: 62.698

[EX Q]: [232.415, 41.128, -57.726, 85.509, 193.599, 193.053, 170.655, 214.266, 3.58, 118.394]
[EX A]:
119.487