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: [-61, -4, 59, 97, 77, 15, 50, -66, 99, 90, -77, 53]

SOLUTION: [-32.5, 27.5, 78.0, 87.0, 46.0, 32.5, -8.0, 16.5, 94.5, 6.5, -12.0]

PROBLEM: [85, 64]

SOLUTION: [74.5]

PROBLEM: [-75, -50, 48, -7, 82, -42]

SOLUTION:
[-62.5, -1.0, 20.5, 37.5, 20.0]