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]: [237.861, 119.858, -8.107, -30.075, 180.524]
[EX A]: 100.012

[EX Q]: [78.523, 239.098, 9.698, 69.94]
[EX A]: 99.315

[EX Q]: [159.965, 172.082]
[EX A]:
166.024