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: ['9401', 'w', 'b', '8287', 'n', 'O', 'H', 'h', '45', '2337']

A: 20070
****
Q: ['5141', 'M', 'f', 't']

A:
5141
****