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]: [82, -37, 81]
[A]: [22.5, 22.0]


[Q]: [30, 8, 45, 40, 7, -66, -98, -66, 10, 90, -48, 75, 54, 48]
[A]:
[19.0, 26.5, 42.5, 23.5, -29.5, -82.0, -82.0, -28.0, 50.0, 21.0, 13.5, 64.5, 51.0]