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]: [73.603, -84.154, 222.739, 205.594, 215.842]
[EX A]: 126.725

[EX Q]: [223.955, 41.858, -54.86, 8.742, 110.448]
[EX A]: 66.029

[EX Q]: [220.186, -39.883, 151.521, 51.982, 57.032, 203.609, 230.875, 167.996, -56.118]
[EX A]:
109.689