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: ['1391', '1719', '8547', 'x', 'a', 'j', '6395', 't', '3421', '6607', 'M', '1645', 'H', 'x', 't']

A: 29725
****
Q: ['8821', '7221']

A: 16042
****
Q: ['4809', 'e', '3359', 'r', '4423', '8949', 'B', 'b', '4251', 'U', '3061', '9507', 'b', '2101', 'E', '963', '4837']

A:
46260
****