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: [77, -69, -47, 13, 70, 22, 70, 22, -29, 80, 83]

SOLUTION: [4.0, -58.0, -17.0, 41.5, 46.0, 46.0, 46.0, -3.5, 25.5, 81.5]

PROBLEM: [63, 44, -32, 39, -3, 79, 76, -74, 57, -73, -42]

SOLUTION: [53.5, 6.0, 3.5, 18.0, 38.0, 77.5, 1.0, -8.5, -8.0, -57.5]

PROBLEM: [87, 46, -13, -69, 33, 59, -22, -94, -58, 40]

SOLUTION:
[66.5, 16.5, -41.0, -18.0, 46.0, 18.5, -58.0, -76.0, -9.0]