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: ['f', 'N', '8597', 't', 'K', '9755', 'j', '9747', '7259', '5493', 'n', '7269', '8493', '2279', '5369', 'f']

Output: 64261


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: ['3839', '751', 'O', 'N', 'K', 'i', '1481', '4093', '9125', '6361', '8231', 'f', '1961', '7527', '4555', 'J']


Output: 47924