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: [24, 99, 39, -86]

SOLUTION: [61.5, 69.0, -23.5]

PROBLEM: [-37, 76, -35, 6, -72, 89, -100, -9, -81, 73, 90, -20]

SOLUTION: [19.5, 20.5, -14.5, -33.0, 8.5, -5.5, -54.5, -45.0, -4.0, 81.5, 35.0]

PROBLEM: [-2, -26, 60, 94, 36, -43, -53, 74, -93, 51, -46, 85, 23, 71]

SOLUTION:
[-14.0, 17.0, 77.0, 65.0, -3.5, -48.0, 10.5, -9.5, -21.0, 2.5, 19.5, 54.0, 47.0]