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]: [67, 45, 59, -50, -28, -70, -84, 69, 72, 53]
[A]: [56.0, 52.0, 4.5, -39.0, -49.0, -77.0, -7.5, 70.5, 62.5]


[Q]: [14, -42]
[A]: [-14.0]


[Q]: [21, 54, 91, -59, 95, -89, 60, -18]
[A]:
[37.5, 72.5, 16.0, 18.0, 3.0, -14.5, 21.0]