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: [91, 4, -53, 2, 79, -22, -71]

SOLUTION: [47.5, -24.5, -25.5, 40.5, 28.5, -46.5]

PROBLEM: [36, -53]

SOLUTION: [-8.5]

PROBLEM: [53, -80, 27, 95, 49, 25, -17, -99, 79, 1, -9]

SOLUTION:
[-13.5, -26.5, 61.0, 72.0, 37.0, 4.0, -58.0, -10.0, 40.0, -4.0]