Detailed Instructions: 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.
Q: ['7577', '8419', 'r', '3293', 'T', '3273', '6821', 'd', '6449', '6231', 'X', '1169', '2869', '6819', '1177', 'D', 'k']
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
7577, 8419, 18, 3293, 20, 3273, 6821, 4, 6449, 6231, 24, 1169, 2869, 6819, 1177, 4, 11