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]: ['6367', '9923', '9141']
[EX A]: 25431

[EX Q]: ['w', '1335', 'G', 'h', '6729', '1999', 'u', 'I', 'r', 'm', '4757', 'W', '3715', '701', '1999']
[EX A]: 21235

[EX Q]: ['5677', '7837', '5263', '4467', '4395', '7203', '963', '5855', 'a', '6765', 'N', '613', 'V', 'R', 'M', 'E', '8157', '4333', 'a', 'd']
[EX A]:
61528