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].

[-77, -57, 89, 67, -3, 6, 76]
[-67.0, 16.0, 78.0, 32.0, 1.5, 41.0]

[-74, -74, 64, -88, 59, 99, 27, -18, -49]
[-74.0, -5.0, -12.0, -14.5, 79.0, 63.0, 4.5, -33.5]

[-42, 19, -82, 42, 19, 52, 46, -95, 69, 6, -57]

[-11.5, -31.5, -20.0, 30.5, 35.5, 49.0, -24.5, -13.0, 37.5, -25.5]