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: ['5899', '229', 'm', '3347', 'k', 'q', 'g', '2755', '8727', '2035', '823', '6835', '9271', 'Q']

A: 39921
****
Q: ['1147', 'f']

A: 1147
****
Q: ['6631', '1783', 'v', '1295', '6545', 'Z', '5747', '8865']

A:
30866
****