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: [74, -26, 94, -68]

SOLUTION: [24.0, 34.0, 13.0]

PROBLEM: [98, -73, 94, -63, 27, -13, 26]

SOLUTION: [12.5, 10.5, 15.5, -18.0, 7.0, 6.5]

PROBLEM: [-75, 94, -46, -63, -90, -42, 45, 15, 98, -3]

SOLUTION:
[9.5, 24.0, -54.5, -76.5, -66.0, 1.5, 30.0, 56.5, 47.5]