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: ['8831', '4799', 'n', '637', 'm', '6975', 'g', 's', '5277', '8649', '907', 'x', 'o', 'R', '8389', '979', '7343', '6529', 'R', '4935', '2383', '5235', 'c', '6051', '4001', '8681', 'q', '2757', 'j', 'C', 'G', '649', '825', 'S', '5865', '8479', 'd', 'Z', '1837']

8831, 4799, 14, 637, 13, 6975, 7, 19, 5277, 8649, 907, 24, 15, 18, 8389, 979, 7343, 6529, 18, 4935, 2383, 5235, 3, 6051, 4001, 8681, 17, 2757, 10, 3, 7, 649, 825, 19, 5865, 8479, 4, 26, 1837