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

[EX Q]: ['95', '279', 'y', 'p', '5083', 'X', 'E', '3817']
[EX A]: 9274

[EX Q]: ['893', '5071', '9611', '9797', 'l', 'v', '6827', 'O', 'H', '2179', '5281', '2791', '7759']
[EX A]:
50209