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]: ['g', 'h', '9141', '7825', 'a', 'u', '2389', 'r', '9739', '8337', 'Z', 'Z', '6717']
[EX A]: 44148

[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]: ['f', '9215', 'f', 'A', 'Z', '3867', 'D', '2977', '1251', '8771', '4731', '6201', '6119', '7291', '5105', '4557', 'x']
[EX A]:
60085