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: ['7285', '5267', 'Q', 'G', '3787', 'Q', 'M', '4955', '6947', '7483']

7285, 5267, 17, 7, 3787, 17, 13, 4955, 6947, 7483