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: ['6367', '9923', '9141']

Output: 25431

Input: Consider Input: ['i', 'o', '1321', 'I', 'W', 'e', '1201', 'I', 'e', 'F', '9841', 'm', '9827', 'q', 'f', 'X', '8261']

Output: 30451

Input: Consider Input: ['7021', '991', 'V', 'n', 'i', '1925', 't', 'I', 'S', 't', 'V', 'L', 'I', 'S']
Output: 9937