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: ['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']

A: 64912
****
Q: ['c', '4501', 'O']

A: 4501
****
Q: ['1801', '9691', '6457', '8521', '2241', 'r', '9863', 'F']

A:
38574
****