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].

[-23, 69, -75]
[23.0, -3.0]

[58, -99]
[-20.5]

[40, 64, 46, -18, 75, 29, -73, -28]

[52.0, 55.0, 14.0, 28.5, 52.0, -22.0, -50.5]