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: [51, -95, 3, 67, 33, -55, -29, 65, -85, -91]

SOLUTION: [-22.0, -46.0, 35.0, 50.0, -11.0, -42.0, 18.0, -10.0, -88.0]

PROBLEM: [74, -26, 94, -68]

SOLUTION: [24.0, 34.0, 13.0]

PROBLEM: [7, -27, -4, 91, -28, -17, -14, 73, -72, 35, 10, 69, 95, -86, 46]

SOLUTION:
[-10.0, -15.5, 43.5, 31.5, -22.5, -15.5, 29.5, 0.5, -18.5, 22.5, 39.5, 82.0, 4.5, -20.0]