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: [84, -86, 12, 56, 39, 30]

SOLUTION: [-1.0, -37.0, 34.0, 47.5, 34.5]

PROBLEM: [60, -8, 34, 3, -31, -83, 13, 23, -6, 64]

SOLUTION: [26.0, 13.0, 18.5, -14.0, -57.0, -35.0, 18.0, 8.5, 29.0]

PROBLEM: [4, 2, -57, 94, 32, -15, 69, 43, 35, 46, 45]

SOLUTION:
[3.0, -27.5, 18.5, 63.0, 8.5, 27.0, 56.0, 39.0, 40.5, 45.5]