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.

['D', '1259', '8927', '3345', '553', '7209', '2507', 'l', 'o', '7317', '1227', '6749', 'S', '3171', 'I', '197', '9577', 'j', 'Q']
52038

['O', '9829', '5265', 'U', 'z', '2843', '1483', '9293', '1327', '2015']
32055

['3545', 'T', 'e', '1917', '8223', '1331', 'm', 'A', '689', '4497', 'V', '2185', 'Z', 'q', '2247', '2297', 'v', '1029', '4657', 'h']

32617