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: [-48, -86, 13, 21, 39, -52, 70, 6, 66, 58, -3, 88, -64]

SOLUTION: [-67.0, -36.5, 17.0, 30.0, -6.5, 9.0, 38.0, 36.0, 62.0, 27.5, 42.5, 12.0]

PROBLEM: [-32, 19, 54, -51]

SOLUTION: [-6.5, 36.5, 1.5]

PROBLEM: [20, -46, -78, -32, 22, -52, -88, -46, 41, -86, -51]

SOLUTION:
[-13.0, -62.0, -55.0, -5.0, -15.0, -70.0, -67.0, -2.5, -22.5, -68.5]