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]: ['6849', 'I', 'p', 's', 'L', '4757', 'j', 'x', 'm', 'P', '5237', '1105', '9015', '9279', 'Q']
[EX A]: 36242

[EX Q]: ['9905', 'm', 'Q', 'S', 'T', '7821', '1773', '9515', '3963', '2931', '7023', '8677', '1739', 'O', '909', '9153', '8319', 'k', '2851']
[EX A]: 74579

[EX Q]: ['6697', 'j', '1627', 'W', 'e', 'n', 'U', 't', '6527', 'N', 'o', '5553', 'a', 'H', '3585', 'e', 'y', 'N', '1577']
[EX A]:
25566