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: [-47, -92, 82, -29, -21, -46, -47, 55, -27, -9, 39, -94, 81]

SOLUTION: [-69.5, -5.0, 26.5, -25.0, -33.5, -46.5, 4.0, 14.0, -18.0, 15.0, -27.5, -6.5]

PROBLEM: [-69, 38, 10]

SOLUTION: [-15.5, 24.0]

PROBLEM: [47, -56, -46, -11, 7, 23, -72, 68]

SOLUTION:
[-4.5, -51.0, -28.5, -2.0, 15.0, -24.5, -2.0]