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]: ['q', 'U', 'I', '5245', 'g', 'Y', 's', 'V', 'b', 'V', 'D', '1193', 'p']
[EX A]: 6438

[EX Q]: ['3883', 'T', '6175', 'B', '4365', '3719', 'V', 'B', '3173', 'K', 'Z']
[EX A]:
21315