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]: [27, -48, 99, 42, -24, 100]
[A]: [-10.5, 25.5, 70.5, 9.0, 38.0]


[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]: [-52, 31, -62]
[A]:
[-10.5, -15.5]