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: ['2225', '1925']

A: 4150
****
Q: ['A', 'S', 'c', 'I', 'M', 'P', '8739', '879', '1401', '3941', '4061', 'q', 'P', '2805', '4473']

A: 26299
****
Q: ['g', '9529', 'q', 'K', 'l', 'i', 'a', '1531', 'V', '8039', 'T', '7609', '1967', 'd']

A:
28675
****