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]: ['7361', '3605', 'V', '2039', '9665', 'X', 'b', '1195', '657', '6509', '7195', '2013', '1847', 'v', '9499', '1761']
[EX A]: 53346

[EX Q]: ['6347', '5495', '169', '9503', 'H', '571', '6105', 'X', 'r', 'e', '7369', 'a', 'd', '6999']
[EX A]: 42558

[EX Q]: ['D', '3423', '3183', 'u', 'W', '5929', '8727', 'W', '3741', 'h', 'V', 's', '3261', '3905', 'c', 'A', '2103', '1119']
[EX A]:
35391