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: ['4601', '6021', '3005', 'I', 'f', '4631', 'Q', 'd', '8041', 'D', '8067', '7383', '757', 't', 'd', 'n', '2275', 'p', 'm', '6021']

Output: 50802


Input: Consider Input: ['f', '6703', 'c', 'c', 'l', '2511', '6507', 'b', '9727', 'l', '1251', 'I', '5231', '91', 'L', 'M', 'd']

Output: 32021


Input: Consider Input: ['945', '3283', '9399', '2233', '7967', '3173', 'Y', '3971', 'a', 'w', 'S', '297', 'c', 'S', '9239', '9365', 'Y', '917', 'O']


Output: 50789