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: ['J', '5149', 'H', 'L', 'm', 'h', '3863', 'n', 'z']

A: 9012
****
Q: ['s', '3607', 'p', 'P', '9285', 'J', 'l', '9863', '9823', '2817', 'g', '9751', '599', '2605', 'k', 'Y', 'O', 'U', '9649']

A: 57999
****
Q: ['e', '6715', '1855', '1625', 'V', 'C', 'i', 'v', 'U']

A:
10195
****