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.

[EX Q]: [-98.361, -84.91]
[EX A]: -91.636

[EX Q]: [185.43, -65.359, -83.971, 30.359, -1.788, 181.168, 210.362, -90.041, -26.224, 239.651]
[EX A]: 57.959

[EX Q]: [-3.315, 153.889, 208.841, 240.33, 222.577, 131.967, 33.853, -91.672, 40.029]
[EX A]:
104.055