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: [-77, 14, 56, -86, -9, 71, -2, -1, -74, 37, 39, 53]

A: [-31.5, 35.0, -15.0, -47.5, 31.0, 34.5, -1.5, -37.5, -18.5, 38.0, 46.0]
****
Q: [52, -7, -11, 69]

A: [22.5, -9.0, 29.0]
****
Q: [-5, -80, 68, -88, -16, -91, 55, 56, -99]

A:
[-42.5, -6.0, -10.0, -52.0, -53.5, -18.0, 55.5, -21.5]
****