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: [43, -22, -75, -92, -34, 33, -60, -65, 89]

SOLUTION: [10.5, -48.5, -83.5, -63.0, -0.5, -13.5, -62.5, 12.0]

PROBLEM: [61, -99, -96]

SOLUTION: [-19.0, -97.5]

PROBLEM: [53, -26, 20, 67, -52, -50]

SOLUTION:
[13.5, -3.0, 43.5, 7.5, -51.0]