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].

[17, -31, 89, -43, 58, -50, 2, -61]
[-7.0, 29.0, 23.0, 7.5, 4.0, -24.0, -29.5]

[75, 44, -31, 8, -71, -34, -38, -23, -18, -14, 53, 83, -60, -56]
[59.5, 6.5, -11.5, -31.5, -52.5, -36.0, -30.5, -20.5, -16.0, 19.5, 68.0, 11.5, -58.0]

[65, -44, 43, -99, -1, -82, -11, -92, -41, -82]

[10.5, -0.5, -28.0, -50.0, -41.5, -46.5, -51.5, -66.5, -61.5]