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: [-10, -49, -49, 14, 92, 63, -10, 73]

SOLUTION: [-29.5, -49.0, -17.5, 53.0, 77.5, 26.5, 31.5]

PROBLEM: [-25, 38, 7, 52, -63, -81, -63, -74, 85, 27, 2]

SOLUTION: [6.5, 22.5, 29.5, -5.5, -72.0, -72.0, -68.5, 5.5, 56.0, 14.5]

PROBLEM: [-21, 88, 84, -34, 27, -2, 35, 82, -100, -92, -45, 61, 68, -42]

SOLUTION:
[33.5, 86.0, 25.0, -3.5, 12.5, 16.5, 58.5, -9.0, -96.0, -68.5, 8.0, 64.5, 13.0]