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: [-39, 16, -88, -73, 52, -75, -23, -37, 21]

SOLUTION: [-11.5, -36.0, -80.5, -10.5, -11.5, -49.0, -30.0, -8.0]

PROBLEM: [73, 14, 60, -37, -46, 37, 74, -6, -98, -73, 62]

SOLUTION: [43.5, 37.0, 11.5, -41.5, -4.5, 55.5, 34.0, -52.0, -85.5, -5.5]

PROBLEM: [-32, -27, 70, -42, 80, 34, -50, -46, -28, -5, -14, -9]

SOLUTION:
[-29.5, 21.5, 14.0, 19.0, 57.0, -8.0, -48.0, -37.0, -16.5, -9.5, -11.5]

