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, -89, 14, 21, 70, 96, -3, -72, 0, -96, -92, -70]

SOLUTION: [75.0, -15.0, -37.5, 17.5, 45.5, 83.0, 46.5, -37.5, -36.0, -48.0, -94.0, -81.0]

PROBLEM: [31, 33, 27, 25]

SOLUTION: [32.0, 30.0, 26.0]

PROBLEM: [53, 66, -30, -61, 36, 27, -80]

SOLUTION:
[59.5, 18.0, -45.5, -12.5, 31.5, -26.5]