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: ['T', '8333', 'C', 'Z', 'n', '1419', 'd', '3205', 'D', '1187', 'd']

A: 14144
****
Q: ['y', 'R', 'b', 'v', 'm', 'H', '9903', '8689', 'D', '1023', 'a', '233', '1833', 'o', 'n', 'm', '5531']

A: 27212
****
Q: ['6723', '1', '6357', '1497', 'A', 'p', 'N', 'T']

A:
14578
****