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: [94.577, -53.428, -32.952, -47.368, -62.93, 186.486, -67.365, -31.864, 33.448, 247.086]

26.569