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: ['3629', '8785', '9537', '8479', '3523', 'c', 'C', '5093', '2405', 'y', '1145', '8987', 'f']

A: 51583
****
Q: ['K', 'p', '97', 'R', '2999', 'u', '7307', '6033', '6431', 'm', 'T']

A: 22867
****
Q: ['597', 'i', '6409', 'Q', '7649', '2223', '8105', '7635', '1907', '1053', 'G']

A:
35578
****