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]: [-89, -9, -14, -28, 41, 44, 86, 40, 75, 30, -1, 86]
[A]: [-49.0, -11.5, -21.0, 6.5, 42.5, 65.0, 63.0, 57.5, 52.5, 14.5, 42.5]


[Q]: [-84, -19]
[A]: [-51.5]


[Q]: [-74, -77, -72, 54, -76, 42, 25, 27, 61]
[A]:
[-75.5, -74.5, -9.0, -11.0, -17.0, 33.5, 26.0, 44.0]