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: ['b', 'W', 'V', 'R', '3761', 'U', '4553', '1803', 'W', '7775', '1067', 'Y', 'D', '3159']

Output: 22118


Input: Consider Input: ['w', '7301', '9411', 'z', 'g', 'X', '1045', 'l', 'F', 'M', 'R', '7957', 'e', '5145']

Output: 30859


Input: Consider Input: ['V', '903', 'h', 'b', '4145', 'q', 'i', '1219', 'W', '3081', 'T', '2631', '8137', 'K']


Output: 20116