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]: ['w', 'V', '3359', '8847', '7551', '2481', 'Y', 'j', 'L', 'G', '7905', 'v', '4141', '2229', 'k', 'H', '3517', '3885', '3665', 'O']
[A]: 47580


[Q]: ['3469', 'n', '5561', '8597', '921', '4737', 'r', 'P', '7127', '3651', 'D', '1703', 'y']
[A]: 35766


[Q]: ['F', 'F', 'R', '9825', 'Z', '9029', 'I', 'x', 'N', 'X', 'i', '1779', '6935', 'S', '3957', 'X']
[A]:
31525