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: [-56, 71, 54, -28, 75, -89, -82, 39, -12, 81, 37, 35, 39, 66, 60]

SOLUTION: [7.5, 62.5, 13.0, 23.5, -7.0, -85.5, -21.5, 13.5, 34.5, 59.0, 36.0, 37.0, 52.5, 63.0]

PROBLEM: [-2, -57, 85, -7, 81, 57, -60, -87, -18]

SOLUTION: [-29.5, 14.0, 39.0, 37.0, 69.0, -1.5, -73.5, -52.5]

PROBLEM: [-5, 81, 50, -12, 34, 99, -50, -91, -12, 2, 97, 2, -16, 79]

SOLUTION:
[38.0, 65.5, 19.0, 11.0, 66.5, 24.5, -70.5, -51.5, -5.0, 49.5, 49.5, -7.0, 31.5]