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]: [-30, -31, 75, 43, 12, -78, 39, 74, 69, -92, -23, -22]
[A]: [-30.5, 22.0, 59.0, 27.5, -33.0, -19.5, 56.5, 71.5, -11.5, -57.5, -22.5]


[Q]: [54, 27, 20, -9]
[A]: [40.5, 23.5, 5.5]


[Q]: [-69, 93, 3, -14, 54, 73, -24, -31, 46]
[A]:
[12.0, 48.0, -5.5, 20.0, 63.5, 24.5, -27.5, 7.5]