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:
['m', '3481']

Ex Output:
3481


Ex Input:
['E', '9289', 'j', '1847', 'u', 'w', 'z', '4045', '9567', '3133', '2967', 'I', '1927', 'I', 'f', 'T']

Ex Output:
32775


Ex Input:
['3417', '4301', 'I', '7337', '9823', 'F', '5153']

Ex Output:

30031