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]: ['D', '1611', 'w', '8825', '8987', '3021', '9019', 's', '87', '9283', '5717', 'f', '1503', '6593', '8533', '785', 'g']
[EX A]: 63964

[EX Q]: ['4601', '6021', '3005', 'I', 'f', '4631', 'Q', 'd', '8041', 'D', '8067', '7383', '757', 't', 'd', 'n', '2275', 'p', 'm', '6021']
[EX A]: 50802

[EX Q]: ['j', '6037', '9827', 'H', 'H', 'C', '3241', '2331', 'S', '8227']
[EX A]:
29663