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]: [-45.826, -27.376, 126.782, -28.164, 213.819, 186.676]
[EX A]: 70.985

[EX Q]: [157.14, 120.799, -55.651, -50.479, 89.067, 192.279, 57.227, 137.972]
[EX A]: 81.044

[EX Q]: [248.59, -78.396, 13.022, 0.79, 194.759, 112.156, 17.217, 209.386, -1.716]
[EX A]:
79.534