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]: ['l', 'V']
[EX A]: 0

[EX Q]: ['3895', 's', 'j', '7755', 'H', '7941', '4903', 's', '3629', '1183', '1001', '5569', 'q', '4735']
[EX A]: 40611

[EX Q]: ['a', 'T', '2235', '2199', '1443', 'E', '1419', '3771', 'd', '1411', '4533', 'N', 't', '3711', '4303']
[EX A]:
25025