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, -42, 24, 40, 59, 88, -75, -11, 9, -56, -92, -80]

SOLUTION: [7.5, -9.0, 32.0, 49.5, 73.5, 6.5, -43.0, -1.0, -23.5, -74.0, -86.0]

PROBLEM: [-77, -52, 64, 34, -9, 29, -91, 90, 8, -87, 34, 1, -8]

SOLUTION: [-64.5, 6.0, 49.0, 12.5, 10.0, -31.0, -0.5, 49.0, -39.5, -26.5, 17.5, -3.5]

PROBLEM: [61, -99, -96]

SOLUTION:
[-19.0, -97.5]