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


[Q]: [-81, -11, -100, 66, 29, 28, 31, -36]
[A]: [-46.0, -55.5, -17.0, 47.5, 28.5, 29.5, -2.5]


[Q]: [-2, 12, 84]
[A]:
[5.0, 48.0]