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: [179.702, 5.716, -42.593, 0.789, -44.015, 63.789, 245.118]

58.358