What is the service charge of the boat howitzers with 456 made?
CREATE TABLE table_name_38 (service_charge VARCHAR, number_made VARCHAR)
SELECT service_charge FROM table_name_38 WHERE number_made = 456
### Context: CREATE TABLE table_name_38 (service_charge VARCHAR, number_made VARCHAR) ### Question: What is the service charge of the boat howitzers with 456 made? ### Answer: SELECT service_charge FROM table_name_38 WHERE number_made = 456