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: ['1823', 'f', 'm', '5201', 'K', 'Q', '8549', '9457', '1583', 'w', 'r', '8467', '1525', 'i', '1597', '1345', '6041', 'K', 'x']

1823, 6, 13, 5201, 11, 17, 8549, 9457, 1583, 23, 18, 8467, 1525, 9, 1597, 1345, 6041, 11, 24