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]: ['I', '1941', '2423', '3381', 'J', '6589', 'h', 'D']
[EX A]: 14334

[EX Q]: ['z', '9173', 's', '8937', 'h', '1881', '7929', 'b', '2441']
[EX A]: 30361

[EX Q]: ['1509', '4463', '1489', 't', 'Y', '5141', '1531', '9785', 'm', '391', 'M', 'b', '2917', 'Z', '1589', '4277']
[EX A]:
33092