CREATE TABLE table_44345 ("Class" TEXT, "Wheel arrangement" TEXT, "Fleet number ( s ) " TEXT, "Manufacturer" TEXT, "Year made" TEXT, "Quantity made" TEXT, "Quantity preserved" TEXT)

What's the quantity preserved when the fleet number was 700?
SELECT "Quantity preserved" FROM table_44345 WHERE "Fleet number(s)" = '700'
SELECT "Quantity preserved" FROM "table_44345" WHERE "Fleet number(s)" = '700'