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: ['a', 'j', 'v', '619', 't', 'a', '5777', 'x', 'R', 'P', '8897', 'j']

A: 15293
****
Q: ['6645', 'k', '4879', 'N', '113', 'L', 'x', '8365', 'v', 'A']

A: 20002
****
Q: ['2319', 'O', '1653', 'H', '5277']

A:
9249
****