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.

[233.742, -71.075]
81.333

[179.144, 114.883, -6.86, 137.104, 4.024, 55.61, 169.274, -60.246, 66.322, -92.91]
56.634

[62.942, 159.41, -92.215, 17.404, 115.108, -56.011, 228.911, 249.61]

85.645