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].

[55, -33, 9, 23, -18, -6, -90, -6, -78]
[11.0, -12.0, 16.0, 2.5, -12.0, -48.0, -48.0, -42.0]

[31, -62, 49, -13, -30, -59, 76, 31, 40, -31, -56, -36]
[-15.5, -6.5, 18.0, -21.5, -44.5, 8.5, 53.5, 35.5, 4.5, -43.5, -46.0]

[22, 89, -26, -54, -28, 35, -93]

[55.5, 31.5, -40.0, -41.0, 3.5, -29.0]