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].

[99, -28, -18, -89, -14, -80, -54, -84, -82]
[35.5, -23.0, -53.5, -51.5, -47.0, -67.0, -69.0, -83.0]

[43, -57]
[-7.0]

[-76, 29, 76, 60, -19, 11]

[-23.5, 52.5, 68.0, 20.5, -4.0]