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].

[33, -76, 34, -35, 27, 74]
[-21.5, -21.0, -0.5, -4.0, 50.5]

[43, -57]
[-7.0]

[78, 3, 3, 50, 80, -76, -73, -20, -71, -29, -47, 4]

[40.5, 3.0, 26.5, 65.0, 2.0, -74.5, -46.5, -45.5, -50.0, -38.0, -21.5]