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: [-79, 66, 43, -67, -68, -15, 18, 22, -100, 77, -4, 30, 22]

SOLUTION: [-6.5, 54.5, -12.0, -67.5, -41.5, 1.5, 20.0, -39.0, -11.5, 36.5, 13.0, 26.0]

PROBLEM: [-81, -97, 24, 13, -42, -46, -6, 31]

SOLUTION: [-89.0, -36.5, 18.5, -14.5, -44.0, -26.0, 12.5]

PROBLEM: [-91, 59, -52, 34, 5, 83, 49, -1, 27]

SOLUTION:
[-16.0, 3.5, -9.0, 19.5, 44.0, 66.0, 24.0, 13.0]