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: [57, -26, -99, 61, 13, 31]

SOLUTION: [15.5, -62.5, -19.0, 37.0, 22.0]

PROBLEM: [-47, 58, 28]

SOLUTION: [5.5, 43.0]

PROBLEM: [-55, 59, -40, 44, 27, -52, -75, 10, 44, 14, -68, 100]

SOLUTION:
[2.0, 9.5, 2.0, 35.5, -12.5, -63.5, -32.5, 27.0, 29.0, -27.0, 16.0]

