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: ['k', 'Z', 'r', 'K', 'b', 'X', 'A']

Output: 0


Input: Consider Input: ['3013', '3955', 'f', '1183', '5111', '9509', '2351', '7087', 'f']

Output: 32209


Input: Consider Input: ['e', 'r', '1071', 'g', 'r', 'c', '9125', '5069', 'R', '2039', '3655', 'v', 'g', '2595', '9875', 'F', '1063']


Output: 34492