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]: [24, -46, -3, -23, -54, 24, 89, -5, -46, -97, 64, -83]
[A]: [-11.0, -24.5, -13.0, -38.5, -15.0, 56.5, 42.0, -25.5, -71.5, -16.5, -9.5]


[Q]: [-21, 13, 42, 12, 48, 35, -98, -25, -7, 21, 35, -24, -45]
[A]: [-4.0, 27.5, 27.0, 30.0, 41.5, -31.5, -61.5, -16.0, 7.0, 28.0, 5.5, -34.5]


[Q]: [77, 90, -20]
[A]:
[83.5, 35.0]