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: ['4749', '1169', '4273', 'X']

A: 10191
****
Q: ['7067', 'E', 'C', '1879', 'Z', 'u', 't', '2053', '6769', 'r', '5207', '7009', 'H', '5587', 'i', 'M', '1357', 'A']

A: 36928
****
Q: ['Q', '523', 'W', 'e', 'T', 'T', 'b', '6517', 'F', '6683', '5719', 'I', '7405', 'm', '2161']

A:
29008
****