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: [-89, -9, -14, -28, 41, 44, 86, 40, 75, 30, -1, 86]

SOLUTION: [-49.0, -11.5, -21.0, 6.5, 42.5, 65.0, 63.0, 57.5, 52.5, 14.5, 42.5]

PROBLEM: [-19, 69, 5, -99, 92, 24]

SOLUTION: [25.0, 37.0, -47.0, -3.5, 58.0]

PROBLEM: [67, -29, -13, -76, 81, 21, -93, 95, 14, -32, -29, 53]

SOLUTION:
[19.0, -21.0, -44.5, 2.5, 51.0, -36.0, 1.0, 54.5, -9.0, -30.5, 12.0]

