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]

[-45, 34]
[-5.5]

[52, 23, 62, -34, 86, 69, 8, -27, 56, 63, -8]

[37.5, 42.5, 14.0, 26.0, 77.5, 38.5, -9.5, 14.5, 59.5, 27.5]