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: [24, 36, -19, 61, 6]

SOLUTION: [30.0, 8.5, 21.0, 33.5]

PROBLEM: [10, 70, 61, -80, 6, 39, -83, 31, -25]

SOLUTION: [40.0, 65.5, -9.5, -37.0, 22.5, -22.0, -26.0, 3.0]

PROBLEM: [15, -23, 68, -12, -40, 66, 79, -4, 24]

SOLUTION:
[-4.0, 22.5, 28.0, -26.0, 13.0, 72.5, 37.5, 10.0]