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: [-91, 59, -52, 34, 5, 83, 49, -1, 27]

SOLUTION: [-16.0, 3.5, -9.0, 19.5, 44.0, 66.0, 24.0, 13.0]

PROBLEM: [23, -1, 90, 56, -44]

SOLUTION: [11.0, 44.5, 73.0, 6.0]

PROBLEM: [50, 6, 75, -54, -78, -66]

SOLUTION:
[28.0, 40.5, 10.5, -66.0, -72.0]