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: [-13, 68, 35, -12, 21, -100, 20, -33, -92, 21, 20, -33, 48, -71]

SOLUTION: [27.5, 51.5, 11.5, 4.5, -39.5, -40.0, -6.5, -62.5, -35.5, 20.5, -6.5, 7.5, -11.5]

PROBLEM: [-61, -4, 59, 97, 77, 15, 50, -66, 99, 90, -77, 53]

SOLUTION: [-32.5, 27.5, 78.0, 87.0, 46.0, 32.5, -8.0, 16.5, 94.5, 6.5, -12.0]

PROBLEM: [-57, 73, -28, 16, -77, -5, -69, 2, 42, -23, -83, -97, 71, 69]

SOLUTION:
[8.0, 22.5, -6.0, -30.5, -41.0, -37.0, -33.5, 22.0, 9.5, -53.0, -90.0, -13.0, 70.0]