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].

[10, 70, 61, -80, 6, 39, -83, 31, -25]
[40.0, 65.5, -9.5, -37.0, 22.5, -22.0, -26.0, 3.0]

[65, 82, -67, -51]
[73.5, 7.5, -59.0]

[71, 67, -5, -52]

[69.0, 31.0, -28.5]