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]: [-41, -35]
[A]: [-38.0]


[Q]: [-18, 56, 64, 94, 90, 63, 35, 44, 86, -91, -58, -50, -44, 11]
[A]:
[19.0, 60.0, 79.0, 92.0, 76.5, 49.0, 39.5, 65.0, -2.5, -74.5, -54.0, -47.0, -16.5]