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]: [217.276, 69.181, 56.534, 10.472, 148.018, 38.673, -94.676, 241.577, -23.436, 45.907]
[EX A]: 70.953

[EX Q]: [194.964, 80.506, -41.268, 32.912, -21.6, 21.543, 69.269]
[EX A]: 48.047

[EX Q]: [183.192, 226.177, 28.219, 208.805, 213.037, 139.24, -75.96, 109.596, 64.791, 158.8]
[EX A]:
125.59

