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: ['D', '1693', 'f', 'B', 'o', '3947', '8667', 'f', '6721', '4191', '79']

Output: 25298


Input: Consider Input: ['D', '1259', '8927', '3345', '553', '7209', '2507', 'l', 'o', '7317', '1227', '6749', 'S', '3171', 'I', '197', '9577', 'j', 'Q']

Output: 52038


Input: Consider Input: ['P', 'E', '6673', 'D', 'u', 'Q', '1815', 'j', '7973', '2079', '7003', 'G', '8355']


Output: 33898