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].

[65, 82, -67, -51]
[73.5, 7.5, -59.0]

[72, -80]
[-4.0]

[85, -53, -85, 47]

[16.0, -69.0, -19.0]