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]: [-57, -27, -20, 4, -82, 58, -39, 92, 64, -68, -21]
[A]: [-42.0, -23.5, -8.0, -39.0, -12.0, 9.5, 26.5, 78.0, -2.0, -44.5]


[Q]: [67, 45, 59, -50, -28, -70, -84, 69, 72, 53]
[A]: [56.0, 52.0, 4.5, -39.0, -49.0, -77.0, -7.5, 70.5, 62.5]


[Q]: [53, 83, -21, 59, -91, 74, 53, 83, 22, -52, 67]
[A]:
[68.0, 31.0, 19.0, -16.0, -8.5, 63.5, 68.0, 52.5, -15.0, 7.5]