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: ['7185', '7087', '8737', '39', '6179', 'q', 'u', '7633', '2875', 'K', 'H', 'p', '6189', 't', 'o', '3453', 'Z', '4763', 't', 'R', 'w', '803', '2945', 'K', 'l', '9265', '6037', 'K', '7825', 'u', 'N', 'C', 'n', 'Q', 'C']

7185, 7087, 8737, 39, 6179, 17, 21, 7633, 2875, 11, 8, 16, 6189, 20, 15, 3453, 26, 4763, 20, 18, 23, 803, 2945, 11, 12, 9265, 6037, 11, 7825, 21, 14, 3, 14, 17, 3