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]: [100, -88, 100, -71, -83, 24, 80, 12, 16]
[A]: [6.0, 6.0, 14.5, -77.0, -29.5, 52.0, 46.0, 14.0]


[Q]: [16, -39, -72, 72, -69, -67, 49]
[A]:
[-11.5, -55.5, 0.0, 1.5, -68.0, -9.0]