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: ['5095', '8235', '4901', 's', '4177', '3077', 'l']

A: 25485
****
Q: ['507', 'P', '9697', 'u', '5057']

A: 15261
****
Q: ['X', '4003', 's', 'Z', 'd', 'p', '8257', '7077', 'q', 'S', 'M', '7217', 'v']

A:
26554
****