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]: ['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']
[EX A]: 30507

[EX Q]: ['s', 't', 'W', '163', 'v']
[EX A]: 163

[EX Q]: ['1165', 'b', 'Z', 'J', '2673', 'q', 'g', 'M', 'd', '9129', '3571', '3387', '3647', '4279', 'Q', 'P', '4733', '1353', '9295']
[EX A]:
43232