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

Output: 52038


Input: Consider Input: ['V', '2633', '3269', 'r', 'Q', '3517', '2571', 'G', '4105', 'm', 'z', 'B', 'A']

Output: 16095


Input: Consider Input: ['j', '5001', '3933', '6609', 'I', '7379', '9613', '5521', '569', '5821', 'T', '7681', '6581', '4917', 'O', 'R', 'K', '3911', 'e']


Output: 67536