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]

[38, 32, -3, 13, 55, 73]
[35.0, 14.5, 5.0, 34.0, 64.0]

[-80, -52, -77]

[-66.0, -64.5]