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: ['r', '2251', 'X', 'H', 'a', '5463', 'g', 'M', '9797', '1581', 'o', 'm', 'v', 'E']

Output: 19092


Input: Consider Input: ['s', 't', 'W', '163', 'v']

Output: 163


Input: Consider Input: ['2273', 'G', '751', 'Z', 'w', '4587', 'x', '4545', '4921', '5735', '495', '753', 'd', '4425', 'm']


Output: 28485