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.

[16.256, 155.71, 43.059, -64.109, -42.445, 78.725, -12.941, 47.497]
27.719

[-60.041, -56.779, 6.2, 73.114, 137.319]
19.963

[98.834, 143.231, 35.995, -64.696]

53.341