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]: ['D', 'C', '7295', 'g', 'j', '1387', 'O', '4701', 'B', 'd', 'W', 'b', 's', 'n', 'n', '4917', '2941', '1825', 'x']
[EX A]: 23066

[EX Q]: ['S', '1249', '6233', 'I', '6733', 'r', 'A', 'E', 'h', 'x', 'p', 'c', '515', '1029', '1593', '1035']
[EX A]: 18387

[EX Q]: ['o', '8349', 'U', '433', '3695', '5949', '4581', 'o', '8579']
[EX A]:
31586