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: [-99, 50, 84, -80, -77, 83, 16, 12, -100, -68, 30, -30, -83, -33, 84]

SOLUTION: [-24.5, 67.0, 2.0, -78.5, 3.0, 49.5, 14.0, -44.0, -84.0, -19.0, 0.0, -56.5, -58.0, 25.5]

PROBLEM: [24, 45, -50, 2, -75, -84, 83, -44, 89, -50, -65, 23, 94]

SOLUTION: [34.5, -2.5, -24.0, -36.5, -79.5, -0.5, 19.5, 22.5, 19.5, -57.5, -21.0, 58.5]

PROBLEM: [24, 70, -25, 86, -81, -37, 92, 57, 49, -66, -61, 66, -88]

SOLUTION:
[47.0, 22.5, 30.5, 2.5, -59.0, 27.5, 74.5, 53.0, -8.5, -63.5, 2.5, -11.0]