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.

['D', 'b', 'h', 'p', '1637']
1637

['1001', 'T', 'w', 'f', 'Q', '4035', 'b', 'q', 'x', 'R']
5036

['3643', 'N', '7823']

11466