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]: [183.332, -51.581, -15.684, 140.965, 37.376, 37.734, 71.356]
[EX A]: 57.643

[EX Q]: [93.405, -31.061]
[EX A]: 31.172

[EX Q]: [124.333, 5.477, -53.787, 226.538, -40.577, -43.102, 214.118, 125.785, 151.837]
[EX A]:
78.958