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]: [-37, 76, -35, 6, -72, 89, -100, -9, -81, 73, 90, -20]
[A]: [19.5, 20.5, -14.5, -33.0, 8.5, -5.5, -54.5, -45.0, -4.0, 81.5, 35.0]


[Q]: [20, 75, 10, 74, -35, 64, -2]
[A]: [47.5, 42.5, 42.0, 19.5, 14.5, 31.0]


[Q]: [78, -21]
[A]:
[28.5]