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.

[-73.074, 87.743, 221.875, 126.604, 31.513, 196.863]
98.587

[85.011, -20.439, 195.195, 114.286]
93.513

[165.718, 163.616, 144.924, 247.554, 106.989, 196.997, 109.315]

162.159