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.

[Q]: ['4463', '489']
[A]: 4952


[Q]: ['E', '9289', 'j', '1847', 'u', 'w', 'z', '4045', '9567', '3133', '2967', 'I', '1927', 'I', 'f', 'T']
[A]: 32775


[Q]: ['7003', 'o', 'A']
[A]:
7003