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]: [197.424, 44.178, 136.316, 246.48, 98.472, -31.327, 41.411]
[EX A]: 104.708

[EX Q]: [-28.295, -24.828, -66.96, -12.108, -96.597, 110.99, 172.86, -18.752, 157.717]
[EX A]: 21.559

[EX Q]: [-36.318, 176.066, 36.435, 132.732, -15.887, -24.851, 169.963, -98.796, 38.818]
[EX A]:
42.018