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: ['3013', '3955', 'f', '1183', '5111', '9509', '2351', '7087', 'f']

Output: 32209


Input: Consider Input: ['1867', '5301', 'x', '3867', '8707', '2429', 'K', '59', '6629', 'v', 'A', 'y', 'P', '3829', '1979', 'R', '8481', '5767', 'h', 'U']

Output: 48915


Input: Consider Input: ['7855', 'w', '2387', '8175', 'Q', 'j', 'R', 'a', '6213', 'w', 'w', '9283', 'i']


Output: 33913