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: ['5899', '229', 'm', '3347', 'k', 'q', 'g', '2755', '8727', '2035', '823', '6835', '9271', 'Q']

Output: 39921


Input: Consider Input: ['2915', '4443', 'Z', '3409', '1417', 'H', 'T', 'u', '3373', 'U', '115', 'R']

Output: 15672


Input: Consider Input: ['j', '5647', '9731', '6395', '177', '7621', 'k', '8285', 'F', 'N', 'I', '1571', 'J', 'J', 'P', '3627', '2793', '7413', 'z']


Output: 53260