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]: ['3451', '2325', '2511', 'i', '6159', '2291', 'e', 'l', 'P', '1177', 'o', 'T']
[A]: 17914


[Q]: ['c', '7415', '6253', '4477', 't', '9449', '7733', '2325', 'Z', '5413', 'q', 'm', 'R', '8619', '7289', '857', '7273', '7425']
[A]: 74528


[Q]: ['z', '4277', '9577', 'o', 'e', 'o', 'N', '1817', 'j', '6295', 'a', '4837', 'w', '6025']
[A]:
32828