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: [68, -66]

SOLUTION: [1.0]

PROBLEM: [54, -28, -32]

SOLUTION: [13.0, -30.0]

PROBLEM: [-1, -80, 78]

SOLUTION:
[-40.5, -1.0]