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]: ['3051', 'Z', 'q', 'u', 'x', '2747', 'e', 'B', '4225', 'Q', 'R', '4629', 'F']
[EX A]: 14652

[EX Q]: ['v', 'Y', '4135', '8645', '263', '5377', '8677', 'Z', 'W', 'g', 'n', 'r', 's', '8513', '5677', 'u', '3033', 'I']
[EX A]: 44320

[EX Q]: ['u', 'E', '7037', 'j', '6097', '6799', '8881', '2851', '2795', 'O', 'H', 'Z', 'O', '9181']
[EX A]:
43641