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: [-18, -74, -7, 59, -76, -57, -99, 65]

SOLUTION: [-46.0, -40.5, 26.0, -8.5, -66.5, -78.0, -17.0]

PROBLEM: [-72, 72, -34, 49, -10, 60, -21, -14]

SOLUTION: [0.0, 19.0, 7.5, 19.5, 25.0, 19.5, -17.5]

PROBLEM: [-7, -67, -24, 28, -4, 26, 46, 83, -99, 22]

SOLUTION:
[-37.0, -45.5, 2.0, 12.0, 11.0, 36.0, 64.5, -8.0, -38.5]