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]: ['g', 'h', '9141', '7825', 'a', 'u', '2389', 'r', '9739', '8337', 'Z', 'Z', '6717']
[EX A]: 44148

[EX Q]: ['c', 'E', 'M', '1303', 'y', 'H']
[EX A]: 1303

[EX Q]: ['9839', 'c', '6161', 'v', 'v', '1471', '7629', 's', 'W', '7575', '3613', 'w', '9251', '3871']
[EX A]:
49410