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]: ['h', '2295', '2913', 'I', '5273', 'L', '2739', '8227', '6537', 'e', '6491', '5463', 'i', '4337', '537']
[EX A]: 44812

[EX Q]: ['d', 'b', 'W', '3201', 'C', 'o', '5187', '9723', '8177', 'F', '6703', 'U', '1393', '1035', '3507', '5993', '3857', 'r', 'C', 'j']
[EX A]: 48776

[EX Q]: ['4635', '6077', '1641', 'R', 'T', '1563', '1361', 'o', 'a', '251', 'w', '6953', '8151', 'R', '1929']
[EX A]:
32561