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: ['s', 'd', 't', '8235', '2279', '7477', '3029', '4377', '9153', '4309', '2295', '407']

A: 41561
****
Q: ['2765', '6767', '7645']

A: 17177
****
Q: ['A', '8103', '2045', 'g', '5329', 'X']

A:
15477
****