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: ['187', 'J', 'l', 'p', '1009', 'g', '5817', 'V', 'B', 'Z', '3329', '9253']

A: 19595
****
Q: ['8739', 'K']

A: 8739
****
Q: ['d', 't', 'B', '2677', '8019', '6339']

A:
17035
****