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]: [219.428, 229.08, 24.616, -83.165, -28.839, 195.219, 170.491, -78.673]
[EX A]: 81.02

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

[EX Q]: [212.309, -5.765, 87.901, 161.279, 232.479, 108.524, 128.298]
[EX A]:
132.146