Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['7527', 'I', '7847', '5857', 'G', '7979', '4529', 'B', 'X', '9035', 'S', '103', '9783', 'M']

7527, 9, 7847, 5857, 7, 7979, 4529, 2, 24, 9035, 19, 103, 9783, 13