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.

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

['8207', '4791', '3925', 'b', 'Z', '8471', '9215', '3117', 'p', '9095', 'h', 'k', 'E', 'h', '6047']
52868

['p', 'w', '5609', 'L', '5691', 'E', '4421', 'O']

15721