Definition: 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.
Input: [-2.956, -44.811, 131.525, 205.987, 29.985, -59.025, 36.716, 111.992, -51.924, 112.036]

46.952