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 Input:
['u', 'i', 'z', 't', '9617', 'd', '3255', 'w', 'S', '3041', '7451']

Ex Output:
23364


Ex Input:
['s', '407', '7983', '1523', '8983', '9841', 'p', 'y', 'N', '7633', 'T', '4177', 'Z', 'Y', '3223', '7125', '2601', '7467', '3039']

Ex Output:
64002


Ex Input:
['M', 'I', '8833', '8641', 'Z', 'h', '3907', '1737', '7693', 'v', '6273', '3163', '4529', 'a', '5465', 'O', '4293', 'c', '2313']

Ex Output:

56847