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].

[42, 42, 0, -99, -11, 17, -42, -72]
[42.0, 21.0, -49.5, -55.0, 3.0, -12.5, -57.0]

[86, -66, -60]
[10.0, -63.0]

[41, 85, 88, 99, -25, -32, -62, -9, -46, -89]

[63.0, 86.5, 93.5, 37.0, -28.5, -47.0, -35.5, -27.5, -67.5]