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]: [159.291, 160.61, -50.992, 34.053, 78.883, 222.627, 105.95]
[EX A]: 101.489

[EX Q]: [233.742, -71.075]
[EX A]: 81.333

[EX Q]: [111.043, -44.288, 71.209, 86.59, -4.793, 14.894, 218.044]
[EX A]:
64.671

