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.

['8353', 'f', '1799', '6985', '2975', 'J', '9105', 'f', 'v', 'C', 'V', '9327', '3015', 'e', 'h', '439', '4969', 'c']
46967

['z', 'T', 'Y', 's', 'j', '585', '7833', '2601', '8057', 'S', '7037', '5799', '4477', '5377', '6301', 'P', 'm', '9431', 'f']
57498

['R', '3193', '4987', 'M', 'Y', '6783', '6239', '4021', 's', 'J', '1765', '1643', '489', 'x', '5643', 'j']

34763