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: ['C', '9973', 'b', '693', 'y', 'H', 'C', 'P', 'b', 'J', 'f', 'T', '2317', 'O', '5755', '8201', 'p', 'y', '8721', 'i']

Output: 35660


Input: Consider Input: ['l', '2511', '2071', 'o', 'F', '7583', '1909', '1859', '3299', '3853', 'h', 'P', 'P', '9175', 'B', 'F']

Output: 32260


Input: Consider Input: ['l', 'E', '6653', 'B', 'g', 'b', 'Z', '579', 'f', '8141', 'u', '5965', '7957', 'o', '7889', 'y']


Output: 37184