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.

Input: Consider Input: ['D', '7807', '9395', 'T', 'c', '5139', '2827', 't', 'T', 'm', '3717', 'U', '3225', '7419', '2481', 'p', 'C', '5277']

Output: 47287


Input: Consider Input: ['r', 'z', 'u', 'D', '3449', 'E', 'f', 'w', '1627', '4093', '955', 'i', 's', 'R', 'b', '9773', '2169', 'M', '9305', '4775']

Output: 36146


Input: Consider Input: ['b', '4891', '7009', '857', '9425', 'I', 'z', '2893', '9641', 'm', '4061', 'T', '269']


Output: 39046