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: ['7187', '5651', 'd', '4869', 'q', '2375', '3547']

Output: 23629


Input: Consider Input: ['t', '7015', '2239', 'I', 'F', 'E', '1363', '9615', '6179', '2539', 'z', '8745', '1319', '4715', '9071', 'K', '3707', '6149', 'd']

Output: 62656


Input: Consider Input: ['X', 'K', '4011', '5941', '4431', '3421', 'j', '9793', '5847', 'K', '6591', 'J', 'q', '6891']


Output: 46926