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: [18, -10, 28, 29, -23, 98]

SOLUTION: [4.0, 9.0, 28.5, 3.0, 37.5]

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: [-43, -47, 50, 31, 84, 3, 32, 51, 1, -24, 35, 91, -20, 78, 22]

SOLUTION:
[-45.0, 1.5, 40.5, 57.5, 43.5, 17.5, 41.5, 26.0, -11.5, 5.5, 63.0, 35.5, 29.0, 50.0]