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]: [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]: [-71, -61, -75, 65, -16, -56, 58, -39, 19, 55, -66, -24]
[A]: [-66.0, -68.0, -5.0, 24.5, -36.0, 1.0, 9.5, -10.0, 37.0, -5.5, -45.0]


[Q]: [61, 50, 91, -2, -83, -80, -59]
[A]:
[55.5, 70.5, 44.5, -42.5, -81.5, -69.5]