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: ['s', '9377', '3663', '1375', 'j', 'L', '7943', '1711', '7409', '9115', '1227', 'I', 'U']

A: 41820
****
Q: ['2485', 'Q', 'G', '5533', 'Y', '21', 'D', 'S']

A: 8039
****
Q: ['2691', '3861', '7087', '4661', '6527']

A:
24827
****