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: ['6551', 'm', '3941', 'F', 'K', 'u', '7981', '9581', 'X', 'M', 'N', 'e', 'G', 'i']

A: 28054
****
Q: ['N', 'V', 't', 'X', 't', 'M']

A: 0
****
Q: ['8743', 'Y', 'O', '8265', '1029', '5689', 'F', 'j', 'Z', 'i', 'S', '1285', '737']

A:
25748
****