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: ['r', '893', 'v', '9625', 'g', 'y', '6757']

18, 893, 22, 9625, 7, 25, 6757