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 Q]: ['6907', '9123', 'L', '8871', 'q', 'C', 'U', '7403', 'F', '3827', '3951', '8879', '2865', 'x', '6175', 'T', '1147']
[EX A]: 59148

[EX Q]: ['2237', '2597', '2593', 'Y', '5345', 'g', 'l', 'I', 'p', 'u', 'L', 'T', '617', '9759', 'b', 'w', '7097', '9863']
[EX A]: 40108

[EX Q]: ['O', '9829', '5265', 'U', 'z', '2843', '1483', '9293', '1327', '2015']
[EX A]:
32055