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].

[-90, 40, 90]
[-25.0, 65.0]

[20, 75, 10, 74, -35, 64, -2]
[47.5, 42.5, 42.0, 19.5, 14.5, 31.0]

[80, 93, 10, 47, 36, -42, -27]

[86.5, 51.5, 28.5, 41.5, -3.0, -34.5]