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: [-19, 3, -82, 68, -38, 19, -48, -86]

SOLUTION: [-8.0, -39.5, -7.0, 15.0, -9.5, -14.5, -67.0]

PROBLEM: [-71, -50, 89, 64, -54, 29, 65, -13, -13, -58]

SOLUTION: [-60.5, 19.5, 76.5, 5.0, -12.5, 47.0, 26.0, -13.0, -35.5]

PROBLEM: [-45, 15, -52]

SOLUTION:
[-15.0, -18.5]