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.

[192.335, 189.22, 235.216, 130.727, 222.285]
193.957

[-27.722, -35.758, 83.995, -7.374, 60.825, 165.182]
39.858

[-71.135, 143.786, 48.316, 146.266, 42.14, 157.235]

77.768