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]: ['N', '1337', 'C', 'T', '863', 'j', '2369', 'P', 'A', 'x', '5725', '2333', 'Q', '9149', 'Q', '8529', 'N']
[A]: 30305


[Q]: ['8871', '1297', 'W', 'f', 'Y', '8731', '113', '6707', '379', '9631', 'X', 'C', 'q']
[A]: 35729


[Q]: ['W', '7723', 'D', '6745', 'W', 'm', 'f', 'H', '6037', '2037', 'c', 'E', '5781', 'j', '1005']
[A]:
29328