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: Consider Input: [112.53, -67.079, 177.313, 230.482, 57.316, -37.564]

Output: 78.833


Input: Consider Input: [84.527, 159.538, -20.208, 42.181, -12.587, -86.549, 131.349, 63.615, 150.304]

Output: 56.908


Input: Consider Input: [114.642, 144.995, 186.404, 230.143, 103.845, 159.661, 118.066, 134.424, -10.966, 114.294]


Output: 129.551