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]: ['4607', 'T', 'a', '6077', 'c', '4761']
[EX A]: 15445

[EX Q]: ['Z', '6245', 'N', '1403', 'b']
[EX A]: 7648

[EX Q]: ['5197', '5923', '4337', '3095', 'L', '7707', 'W', '4387', '515', 'e', '5367', 'a', 'A', 'T', '6489', '2703', '5933', 'p']
[EX A]:
51653