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.

[157.14, 120.799, -55.651, -50.479, 89.067, 192.279, 57.227, 137.972]
81.044

[-8.87, 232.908, 141.714, -47.559, 161.192, 203.441]
113.804

[149.906, 3.696]

76.801