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: ['h', '6937', 'U', 'f', 'S', 'm', '9699', 'E', '4559', 'p', 'Z', 'o', '6409', 's', '4537', '5135', '6901', '6489', '5833', 'l']

A: 56499
****
Q: ['D', 't', 'q', 'S', 'F', 'q', '5765', '9111']

A:
14876
****