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: [106.01, 11.072, -70.575, -23.197, 238.627, 235.865, -35.386]

66.059