Questions about Egyptian Numbers???

Egyptian Numbers

The ancient Egyptians were possibly the first civilization to practice the scientific arts. Indeed, the word chemistry is derived from the word Alchemy which is the ancient name for Egypt.
Where the Egyptians really excelled was in medicine and applied mathematics. But although there is a large body of papyrus literature describing their achievements in medicine, there are no records of how they reached their mathematical conclusions. Of course they must have had an advanced understanding of the subject because their exploits in engineering, astronomy and administration would not have been possible without it.

The Egyptians had a decimal system using seven different symbols.
1 is shown by a single stroke.
10 is shown by a drawing of a hobble for cattle.
100 is represented by a coil of rope.
1,000 is a drawing of a lotus plant.
10,000 is represented by a finger.
100,000 by a tadpole or frog
1,000,000 is the figure of a god with arms raised above his head.

The conventions for reading and writing numbers is quite simple; the higher number is always written in front of the lower number and where there is more than one row of numbers the reader should start at the top.

 Questions about Egyptian Numbers :

1 - Queen Hatshepsut has ordered her Nubian general, Nehsi, to sail to the Land of Punt and obtain

 planks of the finest cut cedar wood for the gates and doors of her new temple. Each ship can carry
 planks of wood so how many ships will Nehsi have to take with him to transport all the wood back to Egypt?
                     Answer: _________________________________

2 - If
 pyramids have
how many bricks are needed to build 
                    Answer: ________________________________

3 - The kings of Megiddo and Kadesh are preparing to invade Egypt. But pharaoh Thutmose III has decided to cross the Sinai desert and attack his enemies before they are ready.
He is taking
  men with him. It takes him 
 days to cross the desert and each man needs 
 litres of water per day - how much water will he need to take?
                    Answer: ________________________________