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: ['1875', '9833', 'i', '7493', 'J', 'P', 'z']

A: 19201
****
Q: ['E', '9289', 'j', '1847', 'u', 'w', 'z', '4045', '9567', '3133', '2967', 'I', '1927', 'I', 'f', 'T']

A: 32775
****
Q: ['I', 'p', 'u', '7943', '2571', '7277', '3245', 'k', '2045', 'r', 'q', '7157', '6155', '1615', 'W']

A:
38008
****