The kings of Meggido and Kadesh are preparing to invade Egypt. But Pharoah Thutmose III has decided to cross the Sinai Desert and attack his enemies before they are ready.

He is taking 300,000 men with him. It takes him 30 days to cross the desert and each man needs 2 litres of water per day - how much water will he need to take?
How do I write it in unit rate

300,000 * 30 * 2 = 18,000,000 liters of water needed for this trek.

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