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: ['245', 'y', '2945', 'S', 'G', 'F', 'D', 'M', '383', '2629', '1959', '8737', '8981', '827', '637', '8403']

245, 25, 2945, 19, 7, 6, 4, 13, 383, 2629, 1959, 8737, 8981, 827, 637, 8403