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

A: 44812
****
Q: ['4975', 'M', 'C', 'D', 't', 'i', 't', 'L']

A: 4975
****
Q: ['t', '3257', '9607', 'v', '2879', '3011', '973', '1191', 'Q', 'A', '6659', '1735', 'e', 'e', '6915', 'b', '6685', '5983', '5759', 'u']

A:
54654
****