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: ['6165', 'x', 'u', 'n', 'V', 'B', '4039', 'l', '991', 'x', '335', '9011', 'K', '8725', 'a', '6291', 'j']

A: 35557
****
Q: ['Z', 'Z', 'K', 'D', '661', 'l', '3131', '8187', '6419', 'J', '8763', '7149', 'x', '7123']

A:
41433
****