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]: [44, -69, 2, -20, -20]
[A]: [-12.5, -33.5, -9.0, -20.0]


[Q]: [42, 42, 0, -99, -11, 17, -42, -72]
[A]: [42.0, 21.0, -49.5, -55.0, 3.0, -12.5, -57.0]


[Q]: [-40, 54]
[A]:
[7.0]