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: [58, -99]

SOLUTION: [-20.5]

PROBLEM: [-93, 99, -27, -69, -48]

SOLUTION: [3.0, 36.0, -48.0, -58.5]

PROBLEM: [-10, -80, -83, -35, -1, -88, 12, 45, 59, -67, 17, -9, -15]

SOLUTION:
[-45.0, -81.5, -59.0, -18.0, -44.5, -38.0, 28.5, 52.0, -4.0, -25.0, 4.0, -12.0]