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]: [-2.425, -41.007, 142.975, 117.593, 142.875, -69.307, -38.932, 92.631, 158.921, 87.117]
[EX A]: 59.044

[EX Q]: [-9.301, -10.629, 88.777, 68.965]
[EX A]: 34.453

[EX Q]: [219.266, 160.044, 164.151, 223.672, 97.381, -58.894, 109.643, -55.134, -54.016, 106.439]
[EX A]:
91.255