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: [-53, -56, -45, -28, -18, 57, -43, 80, 49, -74, 25]

SOLUTION: [-54.5, -50.5, -36.5, -23.0, 19.5, 7.0, 18.5, 64.5, -12.5, -24.5]

PROBLEM: [6, 36, -26, 83, 55, 84, -63, -78, 84, -35, 14, 9, 59, -14]

SOLUTION: [21.0, 5.0, 28.5, 69.0, 69.5, 10.5, -70.5, 3.0, 24.5, -10.5, 11.5, 34.0, 22.5]

PROBLEM: [-27, 73, 26, -35, 81, 81]

SOLUTION:
[23.0, 49.5, -4.5, 23.0, 81.0]