CREATE TABLE table_name_23 (quantity_made VARCHAR2, quantity_preserved VARCHAR2)

What is Quantitiy Made, when Quantity Preserved is '4-4-0 oooo american'?
SELECT quantity_made FROM table_name_23 WHERE quantity_preserved = "4-4-0 — oooo — american"
SELECT "quantity_made" FROM "table_name_23" WHERE "4-4-0 — oooo — american" = "quantity_preserved"