CREATE TABLE table_62436 ("Model" TEXT, "EIS -Final Prod. Year" TEXT, "# Eng." FLOAT, "Maximum Metric MTOW" TEXT, "Outside Diameter ,  main passenger deck" TEXT)

What is # Eng., when Outside Diameter, Main Passenger Deck is 'inches (m)', and when Maximum Metric MTOW is '231.3 tons'?
SELECT "# Eng." FROM table_62436 WHERE "Outside Diameter, main passenger deck" = 'inches (m)' AND "Maximum Metric MTOW" = '231.3 tons'
SELECT "# Eng." FROM "table_62436" WHERE "Maximum Metric MTOW" = '231.3 tons' AND "Outside Diameter, main passenger deck" = 'inches (m)'