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.

[-34.026, 86.773, 149.194, 228.14]
107.52

[162.434, 99.656, 86.665, 13.03, 99.225, 43.608, -41.822, 206.671]
83.683

[192.465, -79.756, -94.571, 169.407, 119.078, 149.485, 80.144, 192.911]

91.145