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]: [84, -12, 27, 10, 23, -64, -8, 23, 3, -90, 87, 4, -74]
[A]: [36.0, 7.5, 18.5, 16.5, -20.5, -36.0, 7.5, 13.0, -43.5, -1.5, 45.5, -35.0]


[Q]: [-53, 31, 52]
[A]: [-11.0, 41.5]


[Q]: [-61, -71, -12, 97, -71, -84, -73, -74, 3, -78, 77, 12, -98, 45]
[A]:
[-66.0, -41.5, 42.5, 13.0, -77.5, -78.5, -73.5, -35.5, -37.5, -0.5, 44.5, -43.0, -26.5]