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.

[Q]: ['5749', 'l', '3297', '8913', '4625', 'M', 'X', 'g', '3143', 'i', '8369', '6101', 'w', '3683', '3891', '1399', '9105', '6923', 'K']
[A]: 65198


[Q]: ['4089', '2385', 'E', 'K', '259', '295', '6649', '8645', 'n', '2577', '2683', '9041', 'Q', 'm', '4237']
[A]: 40860


[Q]: ['5887', 'h', 'E', '7185', '1487', 'x', 'e', 't', '1295', 'A', '8129', '8799', '155', '1965', 'N', 'K', 'h', '1251']
[A]:
36153