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]: [87, 22, 13, 9, -28, -51, -58, -11, 40, 60, 25]
[A]: [54.5, 17.5, 11.0, -9.5, -39.5, -54.5, -34.5, 14.5, 50.0, 42.5]


[Q]: [83, -58]
[A]: [12.5]


[Q]: [49, -66]
[A]:
[-8.5]