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: ['V', '2633', '3269', 'r', 'Q', '3517', '2571', 'G', '4105', 'm', 'z', 'B', 'A']

A: 16095
****
Q: ['Q', '1767', '5523', 'I', '933', 'h', '2189', 'f', '7795', 'X', 'M', 'G', '1215', 'W', '8619']

A: 28041
****
Q: ['o', 'C', '6205', '1701', '4949']

A:
12855
****