Teacher: 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].
Teacher: Now, understand the problem? If you are still confused, see the following example:
[-4, 7, 3]
Solution: [1.5, 5]
Reason: To create the answer, we should first calculate the average of -4 and 7, that is: (-4 + 7 ) / 2 = 1.5, so the first element of the answer is 1.5. Then, we need to calculate the average of 7 and 3, that is: 5. So the second element of the answer is 5.

Now, solve this instance: [48, 90, -18, -19, 58, 97, -90, 47, 12, 37, -70, -89]
Student:
[69.0, 36.0, -18.5, 19.5, 77.5, 3.5, -21.5, 29.5, 24.5, -16.5, -79.5]