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]: [-34, -43, 12]
[A]: [-38.5, -15.5]


[Q]: [28, -83, -37, -51]
[A]: [-27.5, -60.0, -44.0]


[Q]: [-58, -85]
[A]:
[-71.5]