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: ['r', '2251', 'X', 'H', 'a', '5463', 'g', 'M', '9797', '1581', 'o', 'm', 'v', 'E']

A: 19092
****
Q: ['4463', '489']

A: 4952
****
Q: ['2297', 'V', '4713', '8367', '21', 'n', 'F', 'O', 'A']

A:
15398
****