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]: ['w', '8035', 'J', '2671', '7509', '1573', '6915', '8569', '345', 'T', 'P', 's', '1341', '7823', '8671', 'm', 'Q', 's', 'N']
[EX A]: 53452

[EX Q]: ['R', '3361', 'c', 'S', 'g', '3829', '7347', '6633', 'e', '9227']
[EX A]: 30397

[EX Q]: ['D', '1369', 'M', 'm', 'i', '9805', 'V', '4657', 'H', 'Z', 'w', '4457', 'i', 'A', 'k', 'W']
[EX A]:
20288