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]: ['f', '6703', 'c', 'c', 'l', '2511', '6507', 'b', '9727', 'l', '1251', 'I', '5231', '91', 'L', 'M', 'd']
[EX A]: 32021

[EX Q]: ['8109', '5635', 'u', 'M', '1009']
[EX A]: 14753

[EX Q]: ['1847', '6649', 'A']
[EX A]:
8496