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: [-37, 76, -35, 6, -72, 89, -100, -9, -81, 73, 90, -20]

SOLUTION: [19.5, 20.5, -14.5, -33.0, 8.5, -5.5, -54.5, -45.0, -4.0, 81.5, 35.0]

PROBLEM: [-27, 83, -67, 51, -57, -18, -59, 85, -84, 68, 16, 61]

SOLUTION: [28.0, 8.0, -8.0, -3.0, -37.5, -38.5, 13.0, 0.5, -8.0, 42.0, 38.5]

PROBLEM: [-7, -33, 42, 71, -17, 97, 11, 18]

SOLUTION:
[-20.0, 4.5, 56.5, 27.0, 40.0, 54.0, 14.5]