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, 69, 6, -80, -39, 74]
[39.5, 37.5, -37.0, -59.5, 17.5]

[54, 4, -10, 62, -65, 22, -21, 29, -27, -9, -32]
[29.0, -3.0, 26.0, -1.5, -21.5, 0.5, 4.0, 1.0, -18.0, -20.5]

[33, -16, 57, -90]

[8.5, 20.5, -16.5]