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: ['M', '1589', '8353', 'X', 'P', '3173', 'V', '1335', 'm', 'l', '6421', '4823', 'r', '8941', '4255', '9107', 'z', '2449', '2321', 'l']

A: 52767
****
Q: ['3565', 'z', '8811', 'z', 'U', '113', 'I', '1307', '135', 'V', 'P', '5183', '2505', '4863', '1113', 'A', '7575', '827', 'B']

A: 35997
****
Q: ['D', '1025', '3853', '6283', 'y', '3449', '7757', '3363', '4103', 'o', 'E', '8551', '7095', 'C', 'f', 'U', '1507', 'X', 'r']

A:
46986
****