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: [-44, 25, 81, 66, -22]

SOLUTION: [-9.5, 53.0, 73.5, 22.0]

PROBLEM: [-4, -54, 86, -98, -57]

SOLUTION:
[-29.0, 16.0, -6.0, -77.5]