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, -99, 38, 19, -6, -25, 95, -11, -96]

SOLUTION: [-88.0, -30.5, 28.5, 6.5, -15.5, 35.0, 42.0, -53.5]

PROBLEM: [-20, 65, 24, -49, 2, -21, 86, 4, 30, 67, -98]

SOLUTION: [22.5, 44.5, -12.5, -23.5, -9.5, 32.5, 45.0, 17.0, 48.5, -15.5]

PROBLEM: [-55, -35, -6, -14, -65, 59, 55, 67, 77]

SOLUTION:
[-45.0, -20.5, -10.0, -39.5, -3.0, 57.0, 61.0, 72.0]