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.

[EX Q]: ['6645', 'k', '4879', 'N', '113', 'L', 'x', '8365', 'v', 'A']
[EX A]: 20002

[EX Q]: ['135', 'a', 'X', '8067', '8447', '4009', '4221', 'o', 'A', 'x']
[EX A]: 24879

[EX Q]: ['r', 'F', '4355', 'C', '3401', '7441', '3465', 'T', 'm', 'K']
[EX A]:
18662