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.

[1.222, 33.339, 163.969]
66.177

[100.665, 40.782, 24.775, 206.105, 112.523, -96.309, 9.758, 149.054, 3.861, 235.974]
78.719

[-35.552, 8.944, 194.056, 37.354, -89.884, 126.885]

40.301