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: [-12, -89]

SOLUTION: [-50.5]

PROBLEM: [74, -35, -92, -40, 97]

SOLUTION: [19.5, -63.5, -66.0, 28.5]

PROBLEM: [-9, 41]

SOLUTION:
[16.0]