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: [79.713, 68.053, 69.582, -96.8, 113.061, -47.435, -18.727, -38.251, 173.616, -46.661]

25.615