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: [-39, -78, -10, -56, 67, 4, 97, 31]

SOLUTION: [-58.5, -44.0, -33.0, 5.5, 35.5, 50.5, 64.0]

PROBLEM: [67, 45, 59, -50, -28, -70, -84, 69, 72, 53]

SOLUTION: [56.0, 52.0, 4.5, -39.0, -49.0, -77.0, -7.5, 70.5, 62.5]

PROBLEM: [-92, -6, -18, -87, -48, -41, 32, -86, -86]

SOLUTION:
[-49.0, -12.0, -52.5, -67.5, -44.5, -4.5, -27.0, -86.0]