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: [106.34, 108.415, -70.814, 29.027, 214.822, 125.464, 92.065, 171.329, -49.775, 94.561]

82.143