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: [-68, -9, -91, -69, -63, -48, -52, -57, -56, -85, 75, -19]

SOLUTION: [-38.5, -50.0, -80.0, -66.0, -55.5, -50.0, -54.5, -56.5, -70.5, -5.0, 28.0]

PROBLEM: [30, 4, 19, 28, -28, 81, 78, -64, -4, 6, -33, 44, -76]

SOLUTION: [17.0, 11.5, 23.5, 0.0, 26.5, 79.5, 7.0, -34.0, 1.0, -13.5, 5.5, -16.0]

PROBLEM: [7, -100, -8, 15, -32, 73, -43, 91, 19, -81, -65]

SOLUTION:
[-46.5, -54.0, 3.5, -8.5, 20.5, 15.0, 24.0, 55.0, -31.0, -73.0]