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: ['8763', 'k', '3653', 'v', 'd', 'D', 'm', '1037', 'c', 'F', '2349', '7843', '3259', 'v', '5555', '7565', '8137', 't']

A: 48161
****
Q: ['j', 'R', '2435']

A: 2435
****
Q: ['f', 'k', 'I', '4731', 'q', '4761', '1585', '7595', 'L', 'W', '8673']

A:
27345
****