A sour gas field was proposed to be developed in Saudi Arabia's Empty Quarter (Rub al-Khali). In addition to producing natural gas, it will also produce 12,000 tones per day of molten sulfur. This will need to be transported to the port at Ras Al-Khair for processing and shipment about 500 km away. Shipment by rail was considered as the likely transportation alternative. If a train consisted 50 insulated tank cars each containing 60 tonnes of sulfur. How many trains per day would be required to ship this this quantity of sulfur?