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.

[118.319, 70.462]
94.39

[-84.771, 60.727, 165.566, 27.782, 159.929, 167.451, -64.15]
61.791

[209.164, 234.315]

221.74