In this task, you are given an input list A. You need to find all the elements of the list that are numbers and calculate their sum.

Q: ['R', '9751', '4367', 'l', 'N', '5125', '8751', '7507', 'y', 'K', '6127']

A: 41628
****
Q: ['1395', '3605', '6001', 's', 'h', 'T', 'K', 'X', '9413', 'X', '5099', 'c', 'f', 't', 'S', 'f', '4651']

A: 30164
****
Q: ['2535', '8865', '2401', 'o', 'G', '6709', 'I', 'Q', 'z', '1075', 'r', 'V', '4001', 'G', '7739']

A:
33325
****