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: ['e', '9777', '1835', 'N', '2425', '1427', 'o', '4459', '9961', '3285', '5199', 'x', 'e', '7727']

A: 46095
****
Q: ['291', 'R', 'N', '983', '2879', 'C', '3797', '4837', '793', '5489', 'k', '535', 'L', '3605', 's', '3701', 'U', '4399', '2489', '4739']

A: 38537
****
Q: ['2853', '7285', '1295']

A:
11433
****