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

A: 24879
****
Q: ['r', 'b', 'G', 'H', '255', '6809', '5133', '1059', '4317', 'P', '7219', 'd', '805', 'G', '5243', '8305', '8509', 'o']

A: 47654
****
Q: ['3469', 'P', '5883', '3911', '9399', 'i', 'F', 'a', '2577', 'i', 'g', 'O', '2717', 'c', '9937', 'l', '1681', 'f']

A:
39574
****