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.

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

['u', 'e', 'P', 'D', '255', '2573', 'E', 'P', 's', '3725', '3391', 'I', '5323', '885']
16152

['901', '1939', '7637', '8863', 'X', '5003', '8791', '4757', 'E', '1525', 'y', '9735']

49151