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.

[191.996, -86.097, 81.958, -22.864, 102.176, 41.523, 222.055, 2.513, 184.656, -50.416]
66.75

[171.805, 71.031, 36.192, 28.948, -58.045, 53.843]
50.629

[21.676, 24.735, 150.751, -97.819, 85.382, 131.583, 162.831, 227.834]

88.372