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: ['7361', '6913', '3605', '2081', '7619']

A: 27579
****
Q: ['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']

A: 12302
****
Q: ['D', 'Q', 'h', 'k', '5855', '9587', 'T', '6489', 'D', 'Z']

A:
21931
****