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:
['z', 'T', 'Y', 's', 'j', '585', '7833', '2601', '8057', 'S', '7037', '5799', '4477', '5377', '6301', 'P', 'm', '9431', 'f']

Ex Output:
57498


Ex Input:
['i', 'o', '1321', 'I', 'W', 'e', '1201', 'I', 'e', 'F', '9841', 'm', '9827', 'q', 'f', 'X', '8261']

Ex Output:
30451


Ex Input:
['M', '5121', 'z', 'e', 'k', '9567', '3741', 'j', '299', '2917', '6213']

Ex Output:

27858