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]: [-21, 10, 33, 79, -27, 13, -24, 64, -2, 23]
[A]: [-5.5, 21.5, 56.0, 26.0, -7.0, -5.5, 20.0, 31.0, 10.5]


[Q]: [89, -7, 21, 16]
[A]:
[41.0, 7.0, 18.5]