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: [73, -32, -75, 39, -10, -15, 90, -89, -56, 40, -66, -89, -34]

SOLUTION: [20.5, -53.5, -18.0, 14.5, -12.5, 37.5, 0.5, -72.5, -8.0, -13.0, -77.5, -61.5]

PROBLEM: [1, -85]

SOLUTION: [-42.0]

PROBLEM: [50, -54, 54, -58, 54, 6, 47, 43, 74, -40, -74, 69, -5, 62, -68]

SOLUTION:
[-2.0, 0.0, -2.0, -2.0, 30.0, 26.5, 45.0, 58.5, 17.0, -57.0, -2.5, 32.0, 28.5, -3.0]