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: [77, -69, -47, 13, 70, 22, 70, 22, -29, 80, 83]

SOLUTION: [4.0, -58.0, -17.0, 41.5, 46.0, 46.0, 46.0, -3.5, 25.5, 81.5]

PROBLEM: [-20, -22, -38, 68, 32, -96, 79, 4, -39, -49]

SOLUTION: [-21.0, -30.0, 15.0, 50.0, -32.0, -8.5, 41.5, -17.5, -44.0]

PROBLEM: [-5, -56, -75, -32, -21, 6, -86, 49, -42, 83, -24, -93]

SOLUTION:
[-30.5, -65.5, -53.5, -26.5, -7.5, -40.0, -18.5, 3.5, 20.5, 29.5, -58.5]