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]: [-84, -19]
[A]: [-51.5]


[Q]: [53, -70, 12, 14, -11, -69, 85]
[A]: [-8.5, -29.0, 13.0, 1.5, -40.0, 8.0]


[Q]: [-78, 3, -75, 71, 8]
[A]:
[-37.5, -36.0, -2.0, 39.5]