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: [58.271, 233.766, -9.758, -40.349, 145.507, 90.294, 186.999]

Output: 94.961


Input: Consider Input: [138.602, 158.458, 241.327, 194.509, 169.45, -56.151]

Output: 141.032


Input: Consider Input: [-75.699, -32.585]


Output: -54.142


