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].

[75, 87, -2, 42, -20, -50, 51]
[81.0, 42.5, 20.0, 11.0, -35.0, 0.5]

[78, -73, -41, -39, 9, 71, 53, 81, -72, -45, 66, 52, 89, -80, 90]
[2.5, -57.0, -40.0, -15.0, 40.0, 62.0, 67.0, 4.5, -58.5, 10.5, 59.0, 70.5, 4.5, 5.0]

[-37, 98, -14, -76, -70, 63, -22, -13, 13, -34, 87, -36, 61]

[30.5, 42.0, -45.0, -73.0, -3.5, 20.5, -17.5, 0.0, -10.5, 26.5, 25.5, 12.5]