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: [49, -66]

Output: [-8.5]


Input: Consider Input: [-29, -56, -77, -51, 5, -12, -80]

Output: [-42.5, -66.5, -64.0, -23.0, -3.5, -46.0]


Input: Consider Input: [17, 2, -69, -50]


Output: [9.5, -33.5, -59.5]