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]: ['V', '2633', '3269', 'r', 'Q', '3517', '2571', 'G', '4105', 'm', 'z', 'B', 'A']
[EX A]: 16095

[EX Q]: ['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']
[EX A]: 64912

[EX Q]: ['4973', '6687', 'H', 'q', 'Q', '8043', '485', 'P', '7321', '6229', '4193', '6893', '5013', '8293']
[EX A]:
58130