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]: ['u', 'i', 'z', 't', '9617', 'd', '3255', 'w', 'S', '3041', '7451']
[EX A]: 23364

[EX Q]: ['S', 'D', '3101', '4967', '8197', '5025', '4257', 'S', 'X', '7641', 'n', '6775', '4719', 'o', '2821', 'x', '5605', '2181']
[EX A]: 55289

[EX Q]: ['v', 'r', 'N', '6069', '3803', '6535', '1631', '2705', 'f', '315', '5549', 'g']
[EX A]:
26607