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]: ['1073', 'i', 'o', 'j', 'O', 'g', 'X', '3261', '5105', '4831', 'J']
[EX A]: 14270

[EX Q]: ['4997', '5005', '6773', 'q', 'K', '8391', '7303', 'K', 'N', '5417', '8573', 'z', '8653', '8343', 'm', 'L', '1587', 'p', '5323']
[EX A]: 70365

[EX Q]: ['4301', '9445', 'd', 'D', 'J', 'T', 'C', 'd', '6681', 'w', 's', '4059', 'a', '5227', '5319', 'j']
[EX A]:
35032