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 Q]: ['b', 'i', '7807', 'g', '1611', '6733', 'V', '561', 'C', '8575', 's', 'E', '8129', 'F']
[EX A]: 33416

[EX Q]: ['29', 'N', '5061', '7191', 'z', '8367']
[EX A]: 20648

[EX Q]: ['4423', 'Q', '5353', '4591', '1703', '4337', 'G', 'j', '2263', '2123', '6025', 'O', 'L', 'N', '1091', '9059', '8117']
[EX A]:
49085