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: [45, 48, -28, 45]

SOLUTION: [46.5, 10.0, 8.5]

PROBLEM: [34, 32, -21, -70, 38, 7, -25]

SOLUTION: [33.0, 5.5, -45.5, -16.0, 22.5, -9.0]

PROBLEM: [-1, -51, 25]

SOLUTION:
[-26.0, -13.0]

