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.

[Q]: ['h', '2295', '2913', 'I', '5273', 'L', '2739', '8227', '6537', 'e', '6491', '5463', 'i', '4337', '537']
[A]: 44812


[Q]: ['4425', 'x', '1959', 'C', 'c', 'D', 'M', '8317', 'q', 'x', '4277', 'N', 'z', 'I', '1921', 'o', 't']
[A]: 20899


[Q]: ['9501', '6193', '4511', 'g', 'G', 'V', '3987', 'm', '4507', 'V', 'F', '5725', 'U']
[A]:
34424