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]: [42, -57, 62, 14, -89, 19, 56, -90, 32, 21, -2, -9]
[A]: [-7.5, 2.5, 38.0, -37.5, -35.0, 37.5, -17.0, -29.0, 26.5, 9.5, -5.5]


[Q]: [-42, 38, 39, -43, -66, -57, -9, 47, -25, -24, -89]
[A]: [-2.0, 38.5, -2.0, -54.5, -61.5, -33.0, 19.0, 11.0, -24.5, -56.5]


[Q]: [-89, 36, -14, -44, -14, 33, 31, 54, -98]
[A]:
[-26.5, 11.0, -29.0, -29.0, 9.5, 32.0, 42.5, -22.0]