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: ['i', 'w', '8117', '2823', 'C', 'x', 'w', '5959', 'g', 'e', 'L', 'V', 'i', 'w', 'n']

A: 16899
****
Q: ['3469', 'n', '5561', '8597', '921', '4737', 'r', 'P', '7127', '3651', 'D', '1703', 'y']

A: 35766
****
Q: ['M', '9913', 'u', '4899', 'f', 'n', 't', 'A', '3891', '6091', 'x', '9057', '3915']

A:
37766
****