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: [-14, 33, -89]

SOLUTION: [9.5, -28.0]

PROBLEM: [-73, -25, -81, 3, 49, -56, 5, -90, -83, -48, 47]

SOLUTION: [-49.0, -53.0, -39.0, 26.0, -3.5, -25.5, -42.5, -86.5, -65.5, -0.5]

PROBLEM: [78, 74, 62, -87, 77, -43, 72, -99, -52, -86, -90, 45]

SOLUTION:
[76.0, 68.0, -12.5, -5.0, 17.0, 14.5, -13.5, -75.5, -69.0, -88.0, -22.5]