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].

[-61, -4, 59, 97, 77, 15, 50, -66, 99, 90, -77, 53]
[-32.5, 27.5, 78.0, 87.0, 46.0, 32.5, -8.0, 16.5, 94.5, 6.5, -12.0]

[-67, -96, -7, 11]
[-81.5, -51.5, 2.0]

[2, 57, -9, -21, -21, -58, 78, 34, -24, 7, 57, 4, 30, -87]

[29.5, 24.0, -15.0, -21.0, -39.5, 10.0, 56.0, 5.0, -8.5, 32.0, 30.5, 17.0, -28.5]