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.

Ex Input:
['7361', '3605', 'V', '2039', '9665', 'X', 'b', '1195', '657', '6509', '7195', '2013', '1847', 'v', '9499', '1761']

Ex Output:
53346


Ex Input:
['T', '721', '6555', 'g', 'y', 'U', '3053', 'A', '9663']

Ex Output:
19992


Ex Input:
['9105', 's', '3027', '6047', '8083', '3795', '4423', 'z', '8139', '137', '7575', 'X', '9501', '8837', 'x', '1013']

Ex Output:

69682