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]: [72, -80]
[A]: [-4.0]


[Q]: [-43, 46, 22, -76, 46, -87, -59]
[A]: [1.5, 34.0, -27.0, -15.0, -20.5, -73.0]


[Q]: [-49, -46, -17, -55, -3, 18, -51]
[A]:
[-47.5, -31.5, -36.0, -29.0, 7.5, -16.5]