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].

Input: Consider Input: [78, -73, -41, -39, 9, 71, 53, 81, -72, -45, 66, 52, 89, -80, 90]

Output: [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]


Input: Consider Input: [66, -73, -61, -3, 2, -47, -91, 97, 58, -62, 81, -71, -43, -40, -65]

Output: [-3.5, -67.0, -32.0, -0.5, -22.5, -69.0, 3.0, 77.5, -2.0, 9.5, 5.0, -57.0, -41.5, -52.5]


Input: Consider Input: [71, -50, -15, -12, -29]


Output: [10.5, -32.5, -13.5, -20.5]