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: ['f', 'N', '8597', 't', 'K', '9755', 'j', '9747', '7259', '5493', 'n', '7269', '8493', '2279', '5369', 'f']

Output: 64261


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

Output: 32209


Input: Consider Input: ['v', '7507', '8023', '95', '3749', '1827', '4927', '1945']


Output: 28073