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: ['191', 'R', 'Q', '7809', '4851', 'b', 'e', 'H', 'E', 'I', 'r', 'A', 'g', 'e', 'g', 'I', 'j', 'f', '7287']

A: 20138
****
Q: ['c', 'E', 'M', '1303', 'y', 'H']

A: 1303
****
Q: ['M', '4863', 'B', '5983', 'l', '1587', '8501', 'k', 'O', 'l', 'd']

A:
20934
****