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: ['m', 'b', 'Q', 'b', '2285', '1487', 'L', 'x', 'T', 'V', 'k', '9757', 'k', 'h', 'T', 's', 'E', '6385', 'O']

13, 2, 17, 2, 2285, 1487, 12, 24, 20, 22, 11, 9757, 11, 8, 20, 19, 5, 6385, 15