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: ['3051', 'Z', 'q', 'u', 'x', '2747', 'e', 'B', '4225', 'Q', 'R', '4629', 'F']

A: 14652
****
Q: ['57', '9977', '2657', 'p', '9573', '7745', '4755', 'U']

A: 34764
****
Q: ['3039', '6455', '7105', '5301', '247', '5419', 'C', '7731', 'Z', '6891', '1795', '4345', 'f', '6301', '139', '9057', '8497', 'h', '8399']

A:
80721
****