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: [-96, -42, -34, 57, -47, -54, 40, 97, 16, -76, -31, -24, 25, 81, -7]

SOLUTION: [-69.0, -38.0, 11.5, 5.0, -50.5, -7.0, 68.5, 56.5, -30.0, -53.5, -27.5, 0.5, 53.0, 37.0]

PROBLEM: [-68, -54, 55]

SOLUTION: [-61.0, 0.5]

PROBLEM: [86, -91, -83, 9, 90, -4, -52, 18, 21, -71]

SOLUTION:
[-2.5, -87.0, -37.0, 49.5, 43.0, -28.0, -17.0, 19.5, -25.0]