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].

[57, -42, 24, 40, 59, 88, -75, -11, 9, -56, -92, -80]
[7.5, -9.0, 32.0, 49.5, 73.5, 6.5, -43.0, -1.0, -23.5, -74.0, -86.0]

[74, -26, 94, -68]
[24.0, 34.0, 13.0]

[9, 62, 4, -63, -50, 9, -19, -42, -20]

[35.5, 33.0, -29.5, -56.5, -20.5, -5.0, -30.5, -31.0]