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.

[87.02, -25.654, -67.979, 52.368, 20.078, 160.939, 4.162, 205.092, -57.092, -68.35]
31.058

[208.678, 219.921, 113.318, 23.83, -42.88, -32.702, -36.191, 117.84, 91.988]
73.756

[132.674, -31.96, 241.18, 242.626, 214.009, 240.556, 7.221]

149.472

