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

A: 25748
****
Q: ['s', 'g', 'Z', '8919', 'R']

A: 8919
****
Q: ['9755', '2133', '2907', 'c', '9143', '3619', 'K']

A:
27557
****