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]: ['2485', 'Q', 'G', '5533', 'Y', '21', 'D', 'S']
[A]: 8039


[Q]: ['l', '2511', '2071', 'o', 'F', '7583', '1909', '1859', '3299', '3853', 'h', 'P', 'P', '9175', 'B', 'F']
[A]: 32260


[Q]: ['4655', 'i', 'N', '2187', 'y', '3467', '8443', 'X', 'J', 'I', '9651', '5725', '9031', 'S']
[A]:
43159