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]: ['2895', '8095', 'y', '1927', '4827']
[EX A]: 17744

[EX Q]: ['i', 'A', 'a']
[EX A]: 0

[EX Q]: ['u', 'e', '1195', '4521', '9815', '1985', '9429', '6753', 'W', '183', 'k', 'L']
[EX A]:
33881