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]: [12.155, 204.528, 85.84, 66.186]
[EX A]: 92.177

[EX Q]: [164.048, 94.225, 164.003, -19.198, 47.156, 4.59, 170.668, 156.371, -13.172, -27.61]
[EX A]: 74.108

[EX Q]: [-4.749, 102.787, -45.229, 184.111, 221.888, 22.727, 20.887, 34.094]
[EX A]:
67.065