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]: ['6629', 'o', 'e', '497', '4865', '8733', '5733', '7337', 'N']
[EX A]: 33794

[EX Q]: ['f', 'N', '8597', 't', 'K', '9755', 'j', '9747', '7259', '5493', 'n', '7269', '8493', '2279', '5369', 'f']
[EX A]: 64261

[EX Q]: ['p', 'y', 'v', '787', '2413', 'z']
[EX A]:
3200