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: [-38, -61, -23, -94, -64, 18, -26, -96, -92, 96, -34, -80, -13, 45, -83]

SOLUTION: [-49.5, -42.0, -58.5, -79.0, -23.0, -4.0, -61.0, -94.0, 2.0, 31.0, -57.0, -46.5, 16.0, -19.0]

PROBLEM: [81, -34, 68, 80, -48, -16, -47, 59, 84, 75, 19, 82, -95]

SOLUTION: [23.5, 17.0, 74.0, 16.0, -32.0, -31.5, 6.0, 71.5, 79.5, 47.0, 50.5, -6.5]

PROBLEM: [71, 83, -99, 73, 100]

SOLUTION:
[77.0, -8.0, -13.0, 86.5]