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: ['A', '6323', 'T', 'H', 'M', 'S', 'D', 'r', 'v', '8169', '7649', '5149', 'x', '6275']

A: 33565
****
Q: ['R', 'J', 'z', 'o', '1121', '7247', '8987', 'u']

A: 17355
****
Q: ['8903', 'F', '3247']

A:
12150
****