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: ['6849', 'I', 'p', 's', 'L', '4757', 'j', 'x', 'm', 'P', '5237', '1105', '9015', '9279', 'Q']

A: 36242
****
Q: ['W', '8593', '9427', '9931', '8919', 'X', 'B', '8861', '1933', 'Z', 'V', '3427', 'S', '8717', 'd', '1593', '7659', 'Q', 'n']

A: 69060
****
Q: ['8999', '2621', '5815', 'j', 'v', '2035', 'P', 'k', 'k']

A:
19470
****