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, 43, 78, -30, 53]
[A]: [-14.5, 60.5, 24.0, 11.5]


[Q]: [-80, -95, 61, -96, 44, 18, 84, -7]
[A]: [-87.5, -17.0, -17.5, -26.0, 31.0, 51.0, 38.5]


[Q]: [21, 70, -19]
[A]:
[45.5, 25.5]