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]: [112.141, 221.013, 75.929, -19.73, 151.257]
[EX A]: 108.122

[EX Q]: [179.144, 114.883, -6.86, 137.104, 4.024, 55.61, 169.274, -60.246, 66.322, -92.91]
[EX A]: 56.634

[EX Q]: [157.698, -83.507, 141.402, 225.13, 185.354, 235.428, -7.038]
[EX A]:
122.067