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]: [78, -73, -41, -39, 9, 71, 53, 81, -72, -45, 66, 52, 89, -80, 90]
[A]: [2.5, -57.0, -40.0, -15.0, 40.0, 62.0, 67.0, 4.5, -58.5, 10.5, 59.0, 70.5, 4.5, 5.0]


[Q]: [-63, 22, 66, -25, 21, -32, -57, -66, 50, -82, 29]
[A]: [-20.5, 44.0, 20.5, -2.0, -5.5, -44.5, -61.5, -8.0, -16.0, -26.5]


[Q]: [-34, -43, 12]
[A]:
[-38.5, -15.5]