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]: [-12, 93, -67, 52, -13, 30, -65, 71]
[A]: [40.5, 13.0, -7.5, 19.5, 8.5, -17.5, 3.0]


[Q]: [-35, 44, 51, 53, 23, 44, 75, 85]
[A]:
[4.5, 47.5, 52.0, 38.0, 33.5, 59.5, 80.0]