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: ['4607', 'T', 'a', '6077', 'c', '4761']

A: 15445
****
Q: ['7411', 'Y', 'x', 'l', '4119', '7241']

A: 18771
****
Q: ['2591', '2277', 'C', '5437', 'e', '4101', 'e', '7919', 'K']

A:
22325
****