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: [-71, 91, 51, -78, -87, -87, 71]

SOLUTION: [10.0, 71.0, -13.5, -82.5, -87.0, -8.0]

PROBLEM: [-81, -5, -18, -96, 28, -86, 50, 63, 80, -52]

SOLUTION: [-43.0, -11.5, -57.0, -34.0, -29.0, -18.0, 56.5, 71.5, 14.0]

PROBLEM: [44, 94, 68, 20, 27, -35, -67, 72, 49, 10, 40]

SOLUTION:
[69.0, 81.0, 44.0, 23.5, -4.0, -51.0, 2.5, 60.5, 29.5, 25.0]