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: ['7067', 'E', 'C', '1879', 'Z', 'u', 't', '2053', '6769', 'r', '5207', '7009', 'H', '5587', 'i', 'M', '1357', 'A']

Output: 36928


Input: Consider Input: ['3629', '8785', '9537', '8479', '3523', 'c', 'C', '5093', '2405', 'y', '1145', '8987', 'f']

Output: 51583


Input: Consider Input: ['O', '5615', 'h', 'V', '3445', 'o', 'H', 'Q', '2365', '4439', '5567']


Output: 21431