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: ['c', 'r', 'R', 'a', '6915', 'C', '3651', 'j', 'L', '9761', '2923', 'Z', 'e', '833', 'W', '1867', 'G', 'H', 'T']

A: 25950
****
Q: ['9069', '8333', 'H', '2049', '8051', 'L', '2749', '8819', '2883', '9317', 'M', '6515']

A: 57785
****
Q: ['8351', 'S', '4141', 'B', 'W', '3325', 'i', '2175', '919', 'G', 'e', 'b', '181', 'p', 'j', '5065']

A:
24157
****