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.

['3121', 'j']
3121

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

['4127', 'h', '4165', '1127', '6037', 'd', 'R', '3185', '125', '7473', '573', 'J', 'j', '8283', '2171']

37266