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.

[-68.429, 130.101, 45.673]
35.782

[248.089, 9.064, -69.315, -16.093, 95.107, -73.12, 175.054, 52.865, 95.009]
57.407

[-27.751, 64.278, -45.987, 153.077, -69.446, 234.524, 73.888, 6.085, 186.898, 231.144]

80.671