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, 55, -1, 83, 35, 85, 50, 90, -12, -65, 43, 94, 39, -39, -78]
[48.5, 27.0, 41.0, 59.0, 60.0, 67.5, 70.0, 39.0, -38.5, -11.0, 68.5, 66.5, 0.0, -58.5]

[24, 99, 39, -86]
[61.5, 69.0, -23.5]

[46, -33, -16, 21, 24, 59, 39, -75, -64, -44]

[6.5, -24.5, 2.5, 22.5, 41.5, 49.0, -18.0, -69.5, -54.0]