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]: [-61.513, 183.183, 185.709, 179.801, 194.827, 91.62, 229.939, -7.981, 123.813, -77.981]
[EX A]: 104.142

[EX Q]: [129.453, 232.284, -34.595]
[EX A]: 109.047

[EX Q]: [127.151, 134.989]
[EX A]:
131.07