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]: ['2417', '6671']
[A]: 9088


[Q]: ['T', 'n', '8513', '5565', '6343', '1403', '975', '6959', '8049', '1601', 'j', 'Q', 'O', '7889', 'r', 'D', '1903', '6607']
[A]: 55807


[Q]: ['8673', 'R', '7399', 'h', 'g', '177', 'C', 'b', '7181', 'm', '5715', 'x', '2715', '3853', 'b', '1681', '1445', 'S', '109', 'r']
[A]:
38948