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: [-65, 28, -98, -54, 37, -51]

SOLUTION: [-18.5, -35.0, -76.0, -8.5, -7.0]

PROBLEM: [-1, 86, 32, 82, -97, 28, -23]

SOLUTION: [42.5, 59.0, 57.0, -7.5, -34.5, 2.5]

PROBLEM: [83, -21, 70, 33, 91, 71, 40, 99, 83, 98, -14, 22, 23, -58, 98]

SOLUTION:
[31.0, 24.5, 51.5, 62.0, 81.0, 55.5, 69.5, 91.0, 90.5, 42.0, 4.0, 22.5, -17.5, 20.0]