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: ['Q', '1767', '5523', 'I', '933', 'h', '2189', 'f', '7795', 'X', 'M', 'G', '1215', 'W', '8619']

Output: 28041


Input: Consider Input: ['T', '721', '6555', 'g', 'y', 'U', '3053', 'A', '9663']

Output: 19992


Input: Consider Input: ['6995', 'K', '8511', '4111', 'n', '6909', 'E', 'U', '9587', 'e', 'o', 'c', '8199']


Output: 44312