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: ['x', 'd', '5121', 'I', '6737', '3789', '6167', 'C', '8947', 'k', '4715', '1885', 'H', 'B', '5685', 'S', '4615', 's', '7709']

A: 55370
****
Q: ['h', '2295', '2913', 'I', '5273', 'L', '2739', '8227', '6537', 'e', '6491', '5463', 'i', '4337', '537']

A: 44812
****
Q: ['B', 'Q', '9219', '3017', 'H', 'o', 'N', 'L', '9881', 'e', 'b', '6071', '993', 'U', '3369', '261', '8929']

A:
41740
****