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]: [-74, -74, 64, -88, 59, 99, 27, -18, -49]
[A]: [-74.0, -5.0, -12.0, -14.5, 79.0, 63.0, 4.5, -33.5]


[Q]: [-68, -54, 55]
[A]: [-61.0, 0.5]


[Q]: [22, -70, 38, -45, 54, -70, 52, 66, 24, -28, 72, -79, -21, -10, 39]
[A]:
[-24.0, -16.0, -3.5, 4.5, -8.0, -9.0, 59.0, 45.0, -2.0, 22.0, -3.5, -50.0, -15.5, 14.5]