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]: [73, -32, -75, 39, -10, -15, 90, -89, -56, 40, -66, -89, -34]
[A]: [20.5, -53.5, -18.0, 14.5, -12.5, 37.5, 0.5, -72.5, -8.0, -13.0, -77.5, -61.5]


[Q]: [-15, 5]
[A]: [-5.0]


[Q]: [69, 16, -26, 97, -20]
[A]:
[42.5, -5.0, 35.5, 38.5]