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', '1941', '2423', '3381', 'J', '6589', 'h', 'D']

A: 14334
****
Q: ['N', 'e', '4283', '3243', '5581', '1407', 'q', 'y', '6685', 'v', 'c', '5995']

A: 27194
****
Q: ['5595', 'e', 'G', '8519', '8857', 'l', '1527', '7271', '4825', '2683', '659', 'D', 'S', 'O', '1735']

A:
41671
****