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]: [157.423, -98.775, -67.748, 25.759, 24.697, 150.289, -68.457, 212.57, -9.355]
[EX A]: 36.267

[EX Q]: [34.718, 46.286, 107.22, 181.771, -27.702, -66.747]
[EX A]: 45.924

[EX Q]: [74.381, 138.405, 189.732, 111.452, -72.375, 191.087, 73.098, 105.602, 4.542]
[EX A]:
90.658