P: According to the Yuan dynasty chronicle and Marco Polo's accounts, a Burmese army "invaded" the Mongol territory of Gold Teeth, and was defeated by the Mongol army in April 1277. The battle took place either at the Vochang valley or 110km southwest at Kanngai , which the Burmese called Ngasaunggyan. The Yuan Chronicle reports that only 700 men defeated a Burmese army of 40,000 to 50,000 with 10,000 horses and 800 elephants. It also reports only one Mongol was killed, in trying to catch an elephant. According to Marco Polo, the Mongol army consisted of 12,000 mounted archers, and the Burmese army numbered 60,000 men with 2000 elephants, "on each of which was set a tower of timber, well-framed and strong, and carrying from 12 to 16 well-armed fighting men." Even then, the 40,000 to 60,000 figures of the Burmese army strength were likely eye estimates and may still be too high; the Mongols may have erred "on the side of generosity" not to "diminish their glory in defeating superior numbers." According to Marco Polo's account, in the early stages of the battle, the Turkish and Mongol horsemen "took such fright at the sight of the elephants that they would not be got to face the foe, but always swerved and turned back," while the Burmese forces pressed on. But the Mongol commander Huthukh did not panic; he ordered his troops to dismount, and from the cover of the nearby treeline, aim their bows directly at the advancing elephants. The Mongol archers' arrows threw the animals into such pain that they fled.
Answer this: How many more men did the 40,000 Burmese army have compared to the Mongal's army according to the Yuan Chronicle?

A: 39300

P: Oats remove substantial amounts of nitrogen from the soil. They also remove phosphorus in the form of P2O5 at the rate of 0.25 pound per bushel (1 bushel 38 pounds at 12% moisture). Phosphate is thus applied at a rate of 30 to 40 kg/ha, or 30 to 40 lb/acre. Oats remove potash (K2O) at a rate of 0.19 pound per bushel, which causes it to use 1530 kg/ha, or 1327 lb/acre. Usually, 50100 kg/ha (4590 lb/ac) of nitrogen in the form of urea or ammonia is sufficient, as oats use about one pound per bushel. A sufficient amount of nitrogen is particularly important for plant height and hence, straw quality and yield. When the prior-year crop was a legume, or where ample manure is applied, nitrogen rates can be reduced somewhat.
Answer this: What things does nitrogen in the soil influence?

A: plant height

P: The Cham also requested Ming China to intervene by helping bring the Vietnamese back in line by force and demarcate the border between Champa and Vietnam. China, however, only verbally rebuked the Vietnamese for its incursion, which the Vietnamese ignored, proceeding with its attack and plan to destroy its rival. The Vietnamese then carried out its campaign. On November 28, 1470, Le Thanh Tong formally launched his attack as a 100,000-strong Vietnamese naval expedition set out that day, followed by another Vietnamese army consisting of 150,000 men on December 8. The Vietnamese army was reorganized to copy the Chinese army, armed with gunpowder weapons. Le Thanh Tong raised a total of 300,000-strong army in the battlefied and, significantly outnumbering the 100,000-strong Cham army. This came at a massive financial cost since it drained the Vietnamese treasury of 1,000 gold liang each day. However, it decisively won the war.
Answer this: How many days after Le Thanh Tong formally launched his attack did he follow with another Vietnamese army consiting of 150000 men?

A:
10