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].

[42, 42, 0, -99, -11, 17, -42, -72]
[42.0, 21.0, -49.5, -55.0, 3.0, -12.5, -57.0]

[58, 76, 12, -55, 74, 15, -81]
[67.0, 44.0, -21.5, 9.5, 44.5, -33.0]

[-97, -6, 78, -66, -80, 64, -98, -82, 5, -3, -37, 15]

[-51.5, 36.0, 6.0, -73.0, -8.0, -17.0, -90.0, -38.5, 1.0, -20.0, -11.0]