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]: ['b', 's', 'v', '4757', '9063', 'I', '8397', '7975', 'Q']
[EX A]: 30192

[EX Q]: ['6669', 'n', 't', 'N', 'x', '8153', 'W', 'v', 'B', '3181', 'y', 'e', '3491']
[EX A]: 21494

[EX Q]: ['8339', 'H', 's', 'C', '4361', 'D', 'C', '2291', '5695', 'T', 'h', 'E', 'R', 'i', 'g', '1941', 'y', '3363']
[EX A]:
25990