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: [7, -21, -30, -4, -56, 19, 24, -47, 92]

SOLUTION: [-7.0, -25.5, -17.0, -30.0, -18.5, 21.5, -11.5, 22.5]

PROBLEM: [42, 42, 0, -99, -11, 17, -42, -72]

SOLUTION: [42.0, 21.0, -49.5, -55.0, 3.0, -12.5, -57.0]

PROBLEM: [-52, 11, -81, 50, -11, 21, -87, -70, 72, 17, -7, -93]

SOLUTION:
[-20.5, -35.0, -15.5, 19.5, 5.0, -33.0, -78.5, 1.0, 44.5, 5.0, -50.0]