TASK DEFINITION: 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].
PROBLEM: [-93, -90, -54, 88, 28, 87, 86, 83, 50, -6, -87, 97, -91, 5, -38]

SOLUTION: [-91.5, -72.0, 17.0, 58.0, 57.5, 86.5, 84.5, 66.5, 22.0, -46.5, 5.0, 3.0, -43.0, -16.5]

PROBLEM: [-57, -27, -20, 4, -82, 58, -39, 92, 64, -68, -21]

SOLUTION: [-42.0, -23.5, -8.0, -39.0, -12.0, 9.5, 26.5, 78.0, -2.0, -44.5]

PROBLEM: [-22, 54, 74, -83, -52, 47, -26, 30]

SOLUTION:
[16.0, 64.0, -4.5, -67.5, -2.5, 10.5, 2.0]