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: ['4401', 'p', 'V', 'l', 'H', '7329', 's', '4717', 'l', '1773', '67', '179', 'l', '6991', 'a', '9377']

A: 34834
****
Q: ['D', '7807', '9395', 'T', 'c', '5139', '2827', 't', 'T', 'm', '3717', 'U', '3225', '7419', '2481', 'p', 'C', '5277']

A: 47287
****
Q: ['9527', 'P', 'z', '4359', 'X', '7773', '6771', '1897', '31']

A:
30358
****