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: ['2325', '3259', '1947', '8065', 'H', '2329', 'h', 'l', 'k', 'R']

A: 17925
****
Q: ['887', '8133', 'X', '2253', '8461', 'I', '5425', 'Z', 'z', 'r']

A: 25159
****
Q: ['8901', 'V', '2505', 'F', '4333', 'A', '1983', 's', '673', 'R', 'P']

A:
18395
****