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: [75, 87, -2, 42, -20, -50, 51]

Output: [81.0, 42.5, 20.0, 11.0, -35.0, 0.5]


Input: Consider Input: [-2, -57, 85, -7, 81, 57, -60, -87, -18]

Output: [-29.5, 14.0, 39.0, 37.0, 69.0, -1.5, -73.5, -52.5]


Input: Consider Input: [-77, -38, -53]


Output: [-57.5, -45.5]