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.

[74.601, 131.018, -45.91]
53.236

[103.885, 191.867, 82.228, 177.708, 136.093, -17.022]
112.46

[-45.405, 88.761]

21.678