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: [25, 11, -70, 49, 17, 25, -51, -78, -13, -69, -55, 83, -8]

SOLUTION: [18.0, -29.5, -10.5, 33.0, 21.0, -13.0, -64.5, -45.5, -41.0, -62.0, 14.0, 37.5]

PROBLEM: [-5, 81, 50, -12, 34, 99, -50, -91, -12, 2, 97, 2, -16, 79]

SOLUTION: [38.0, 65.5, 19.0, 11.0, 66.5, 24.5, -70.5, -51.5, -5.0, 49.5, 49.5, -7.0, 31.5]

PROBLEM: [13, 53, -42, -12, -66, -80, 58, -33]

SOLUTION:
[33.0, 5.5, -27.0, -39.0, -73.0, -11.0, 12.5]