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: [-25, -64, 85, -23, 64, -74, -66, -15, -8, -59]

SOLUTION: [-44.5, 10.5, 31.0, 20.5, -5.0, -70.0, -40.5, -11.5, -33.5]

PROBLEM: [-34, 7, -83, 25, -31, 7]

SOLUTION: [-13.5, -38.0, -29.0, -3.0, -12.0]

PROBLEM: [86, 98, 39, 9, -21, -7, 25, -20, 73]

SOLUTION:
[92.0, 68.5, 24.0, -6.0, -14.0, 9.0, 2.5, 26.5]