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: [-3, -21, 57, -70, -97, -90, 31, 83, 68, -34, -65, 13]

SOLUTION: [-12.0, 18.0, -6.5, -83.5, -93.5, -29.5, 57.0, 75.5, 17.0, -49.5, -26.0]

PROBLEM: [-76, -32, -40, 62, 72, 71, 3, -22]

SOLUTION: [-54.0, -36.0, 11.0, 67.0, 71.5, 37.0, -9.5]

PROBLEM: [-38, 80, 70, -78, -60, 62, 18, 46, 36, -35]

SOLUTION:
[21.0, 75.0, -4.0, -69.0, 1.0, 40.0, 32.0, 41.0, 0.5]