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: ['g', 'M', 'I', 'V', '3377', '7309', '3617', 'v', '9207', 'k', '387', 'g', 'C', '4785', '1527', 'O', 'A']

A: 30209
****
Q: ['O', '9829', '5265', 'U', 'z', '2843', '1483', '9293', '1327', '2015']

A: 32055
****
Q: ['X', '557', 'r', 'o', 'P', 'H', 'c', '2227', '3519', '8161', '3385', 'L', 'W', 'o', '2539']

A:
20388
****