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].

[40, 34, -39]
[37.0, -2.5]

[27, -75, 71, -18, -67, -62, 95, 3, 10]
[-24.0, -2.0, 26.5, -42.5, -64.5, 16.5, 49.0, 6.5]

[73, 86, -26, 71, 87, -21, 93, 89, -6, 100, 19, 68, -38, -46]

[79.5, 30.0, 22.5, 79.0, 33.0, 36.0, 91.0, 41.5, 47.0, 59.5, 43.5, 15.0, -42.0]