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]: ['6723', '1', '6357', '1497', 'A', 'p', 'N', 'T']
[A]: 14578


[Q]: ['1057', '3937']
[A]: 4994


[Q]: ['2547', 'A', 't', 'j', '9295', 'J', '6285', '321', 'S', '4387', '2123', 'V', 'd', '4345', '4417', '1729', '1431']
[A]:
36880