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: [-42, -76]

SOLUTION: [-59.0]

PROBLEM: [-13, 97, -60, -24, 6, 8, -89, -98, 20, -76]

SOLUTION: [42.0, 18.5, -42.0, -9.0, 7.0, -40.5, -93.5, -39.0, -28.0]

PROBLEM: [-15, -23, -73, -86, 61, 99, 36, -27]

SOLUTION:
[-19.0, -48.0, -79.5, -12.5, 80.0, 67.5, 4.5]