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].

[77, 66, 11]
[71.5, 38.5]

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

[9, 45, 19, 98, 63]

[27.0, 32.0, 58.5, 80.5]