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.

[43.362, 111.151, 162.709, 43.974, 184.165, 238.15, 181.927]
137.92

[17.197, 152.985, 73.815]
81.332

[203.498, -79.59, -73.767, -65.942, -8.693]

-4.899