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: [40.313, 111.781, -4.654, 207.707, 149.175, -41.041, 206.948, 0.05, 238.678, 194.837]

110.379