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].

Q: [40, 77, 36, 50, 36, 89, -13, 75, -57, -13, 15, 42, 72, 21]

A: [58.5, 56.5, 43.0, 43.0, 62.5, 38.0, 31.0, 9.0, -35.0, 1.0, 28.5, 57.0, 46.5]
****
Q: [89, -29, -43, 99, -63, -80, -73, -50, -58]

A: [30.0, -36.0, 28.0, 18.0, -71.5, -76.5, -61.5, -54.0]
****
Q: [22, 84, -53]

A:
[53.0, 15.5]
****