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: ['9869', '7701', 'H', 'o', 'v', '1431', 'O', 'L']

A: 19001
****
Q: ['4869', 'L']

A: 4869
****
Q: ['O', 'K', 'I', 'F', '2607', '603', '2385', '3031', '6659', '9647', '5421', 'I', 'A', 'x', 'R', '4615', 'Z']

A:
34968
****