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: [49, -66]

SOLUTION: [-8.5]

PROBLEM: [53, -14, 74, -1, -98, 31, -26, 21, 41, -87, 14, 46]

SOLUTION: [19.5, 30.0, 36.5, -49.5, -33.5, 2.5, -2.5, 31.0, -23.0, -36.5, 30.0]

PROBLEM: [83, -11, 36, -21, 99, 79, 47, 82, -47, -90, -4, -58, 47]

SOLUTION:
[36.0, 12.5, 7.5, 39.0, 89.0, 63.0, 64.5, 17.5, -68.5, -47.0, -31.0, -5.5]