In this task you are given a list of numbers and you need to find the average of each two consecutive values. The average of two numbers a and b is calculated as: (a + b) /2. The output should be a list of the averages of each two consecutive values. A list is presented with two brackets and comma-separated values, like: [1,2,3].

[Q]: [69, -90, -81, -41, -38, -41, 15, 55, 18, -24, 52, -55, 79, 84, -59]
[A]: [-10.5, -85.5, -61.0, -39.5, -39.5, -13.0, 35.0, 36.5, -3.0, 14.0, -1.5, 12.0, 81.5, 12.5]


[Q]: [-21, 10, 33, 79, -27, 13, -24, 64, -2, 23]
[A]: [-5.5, 21.5, 56.0, 26.0, -7.0, -5.5, 20.0, 31.0, 10.5]


[Q]: [-13, -74, 5, 51, -79, 21]
[A]:
[-43.5, -34.5, 28.0, -14.0, -29.0]