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: ['4749', '1169', '4273', 'X']

A: 10191
****
Q: ['D', '1259', '8927', '3345', '553', '7209', '2507', 'l', 'o', '7317', '1227', '6749', 'S', '3171', 'I', '197', '9577', 'j', 'Q']

A: 52038
****
Q: ['A', '771', 'Q', 'b', '9929', '4991', 'q', '9863', '4363', '5721', 'C', '991', 'j', 'r', 'Q', 'B', 'K']

A:
36629
****