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]: [-31, 47, -12, 69, 3, 15, 55, 87, 81, 75, -77, -59, -28]
[A]: [8.0, 17.5, 28.5, 36.0, 9.0, 35.0, 71.0, 84.0, 78.0, -1.0, -68.0, -43.5]


[Q]: [-82, -46, -50, 84, 94, 78, -5, -49, -60, 13, 6, 68]
[A]: [-64.0, -48.0, 17.0, 89.0, 86.0, 36.5, -27.0, -54.5, -23.5, 9.5, 37.0]


[Q]: [-81, -5, -18, -96, 28, -86, 50, 63, 80, -52]
[A]:
[-43.0, -11.5, -57.0, -34.0, -29.0, -18.0, 56.5, 71.5, 14.0]