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: [-16, 54, 42]

SOLUTION: [19.0, 48.0]

PROBLEM: [-2, 12, 55, -100, 82, 53, 13, 62, -93, -8, -25, -15, 92]

SOLUTION: [5.0, 33.5, -22.5, -9.0, 67.5, 33.0, 37.5, -15.5, -50.5, -16.5, -20.0, 38.5]

PROBLEM: [-11, 24, -26]

SOLUTION:
[6.5, -1.0]