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].

[83, -58]
[12.5]

[77, -69, -47, 13, 70, 22, 70, 22, -29, 80, 83]
[4.0, -58.0, -17.0, 41.5, 46.0, 46.0, 46.0, -3.5, 25.5, 81.5]

[-73, -16, -76, -53, -47, 93, 95, 93, -92, 9]

[-44.5, -46.0, -64.5, -50.0, 23.0, 94.0, 94.0, 0.5, -41.5]