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: [-68, 93, -7, 31, -45, -70, -28, 78]

SOLUTION: [12.5, 43.0, 12.0, -7.0, -57.5, -49.0, 25.0]

PROBLEM: [84, 76, -56, 90, -63, 11, -25, 44, -16, -86, -51, -87, -7, 38]

SOLUTION:
[80.0, 10.0, 17.0, 13.5, -26.0, -7.0, 9.5, 14.0, -51.0, -68.5, -69.0, -47.0, 15.5]