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: ['T', 'n', '8513', '5565', '6343', '1403', '975', '6959', '8049', '1601', 'j', 'Q', 'O', '7889', 'r', 'D', '1903', '6607']

A: 55807
****
Q: ['6471', '4603', '491', 'H', 'H', 'C', 'O', '5645', '8973', '7717', 'j', '3195', '4819']

A:
41914
****