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]: [-2, -57, 85, -7, 81, 57, -60, -87, -18]
[A]: [-29.5, 14.0, 39.0, 37.0, 69.0, -1.5, -73.5, -52.5]


[Q]: [-67, -78, -72, 9, -90, 64, 13, -2, -61, 45, 36, -7, -25, 68]
[A]: [-72.5, -75.0, -31.5, -40.5, -13.0, 38.5, 5.5, -31.5, -8.0, 40.5, 14.5, -16.0, 21.5]


[Q]: [-8, -88, -68, 60, -68, -23, 30]
[A]:
[-48.0, -78.0, -4.0, -4.0, -45.5, 3.5]