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: ['2577', 'B', '3059', 'S', 'l', 'T', 'Q', 'x', 'f', 'l', 'y']

A: 5636
****
Q: ['9445', '7291', 'r', 'g', '1175', '7823', '5507', 'j', '7249', '6335', '3853', 'b', 'u', 'S', '365', 'Z', '7489', 'S', 'W', 'e']

A: 56532
****
Q: ['G', 'p', '8041', 'w', '1297']

A:
9338
****