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', 'w', '8117', '2823', 'C', 'x', 'w', '5959', 'g', 'e', 'L', 'V', 'i', 'w', 'n']
[EX A]: 16899

[EX Q]: ['K', '9121', 'y', '4233', '1513', 'd', '5609', 'C', 'q', 'p', 'S', '627', 'q', 'I']
[EX A]: 21103

[EX Q]: ['9931', 't', '1773', 'M', '4519', '4271', '6815', 'd', 'H', 'L', '25', '961', '5029', 'i', 'S', 'd', 'i', '5101']
[EX A]:
38425