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]: ['F', 'v', 'G', '6023', 'M', 'Q', 'A', '8477', '2079', 'A', '813', 'C', '3479', 'G', '1977', '5569', '8749', 'Y']
[EX A]: 37166

[EX Q]: ['2175', '4539', 'L', 'T', 'q', '2407', 'F', 'V', 'b', '9475', '2279', '4469', '6231']
[EX A]: 31575

[EX Q]: ['1607', 'g', 'r', '199', '2471', 'E', '5341', 'u', 'F', '9791', '1409', '9767', 'p', '2817', '2351']
[EX A]:
35753