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]: [-100, -17, -69, 0, 35, -39, -34, -70, 21, 55, -74, -63]
[A]: [-58.5, -43.0, -34.5, 17.5, -2.0, -36.5, -52.0, -24.5, 38.0, -9.5, -68.5]


[Q]: [-12, -20, -43, 3, -38, -4, 34]
[A]: [-16.0, -31.5, -20.0, -17.5, -21.0, 15.0]


[Q]: [85, -100, 77, 17, -41, -71, -91, 71]
[A]:
[-7.5, -11.5, 47.0, -12.0, -56.0, -81.0, -10.0]