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: ['7973', 'J', '9035', 'H', '4051', '2661', 's', 'z', '8225', 'M', '4153']

A: 36098
****
Q: ['w', '8035', 'J', '2671', '7509', '1573', '6915', '8569', '345', 'T', 'P', 's', '1341', '7823', '8671', 'm', 'Q', 's', 'N']

A: 53452
****
Q: ['N', '7503', '173', '7477', '851', 't', 'f', 'c', '1161', '829', '9017', 'S', '8271']

A:
35282
****