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', 'b', 'W', '3201', 'C', 'o', '5187', '9723', '8177', 'F', '6703', 'U', '1393', '1035', '3507', '5993', '3857', 'r', 'C', 'j']

Output: 48776


Input: Consider Input: ['X', '6189', '5435', 'y', '8931', '8987', 'F', '8377', 'k', '8631', '8717', 'q', '2923', 'g', '7225', 'j']

Output: 65415


Input: Consider Input: ['3965', 'w', '5389', '8087', 'Z', '9919', 'f', '7529', 'q', '2067', '833', '5851', 'Z', '5177', 'k']


Output: 48817