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]: [20, 17, 12, -4, 33, -71, 17, -43, 72, -53, 80]
[A]: [18.5, 14.5, 4.0, 14.5, -19.0, -27.0, -13.0, 14.5, 9.5, 13.5]


[Q]: [-100, 68, -69, 30]
[A]: [-16.0, -0.5, -19.5]


[Q]: [-47, -44, -66, -65, -79, 6, -71]
[A]:
[-45.5, -55.0, -65.5, -72.0, -36.5, -32.5]