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: [81, -51, 1, -76, 11, 93, -3, 40, -15, -37, -20, -34, -85, -64, -34]

SOLUTION: [15.0, -25.0, -37.5, -32.5, 52.0, 45.0, 18.5, 12.5, -26.0, -28.5, -27.0, -59.5, -74.5, -49.0]

PROBLEM: [20, -17, 41, -60, 2, 64, 36, 16, -43]

SOLUTION: [1.5, 12.0, -9.5, -29.0, 33.0, 50.0, 26.0, -13.5]

PROBLEM: [25, -6, -34, -85, -19, -89, 31, -17, 0, -60, -65, 3]

SOLUTION:
[9.5, -20.0, -59.5, -52.0, -54.0, -29.0, 7.0, -8.5, -30.0, -62.5, -31.0]

