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.

[159.965, 172.082]
166.024

[121.069, 12.661, 159.825, -39.645, 6.609, 156.735, 110.054, 112.875]
80.023

[-63.876, 196.122, 95.796]

76.014