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: [-2, 54, 35, -67]

SOLUTION: [26.0, 44.5, -16.0]

PROBLEM: [98, -73, 94, -63, 27, -13, 26]

SOLUTION: [12.5, 10.5, 15.5, -18.0, 7.0, 6.5]

PROBLEM: [50, 81, 31, 3, -33, -37, -82, 49, 76, 58]

SOLUTION:
[65.5, 56.0, 17.0, -15.0, -35.0, -59.5, -16.5, 62.5, 67.0]