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: ['g', 'h', '9141', '7825', 'a', 'u', '2389', 'r', '9739', '8337', 'Z', 'Z', '6717']

A: 44148
****
Q: ['M', '1589', '8353', 'X', 'P', '3173', 'V', '1335', 'm', 'l', '6421', '4823', 'r', '8941', '4255', '9107', 'z', '2449', '2321', 'l']

A: 52767
****
Q: ['Y', 'L', 'u', 'x', 'K', 'W', '835', '8113', '2213', 'b', 'p', 'w', '3925', 'M', '9679', '365', 'K', 'y']

A:
25130
****