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]: [-69, -35, 56, 64]
[A]: [-52.0, 10.5, 60.0]


[Q]: [20, 57, 16, -66, -30, -89, 64, -22, 7, -36, -19, -71]
[A]: [38.5, 36.5, -25.0, -48.0, -59.5, -12.5, 21.0, -7.5, -14.5, -27.5, -45.0]


[Q]: [5, -1, 84, -19, -16, 14, 89, -80, 15, -77, 28, 74, 64]
[A]:
[2.0, 41.5, 32.5, -17.5, -1.0, 51.5, 4.5, -32.5, -31.0, -24.5, 51.0, 69.0]