suppose that it is February 20 and a treasure realizes that on July 17 the company will have to issue $5 million of commercial paper with a maturity of 180 days. If the paper were issued today, the company will realize $4820000. The september eurodollar futures price is quoted as 92. How should the treasure hedge the company's exposure?

答案是： short euro dollar future, 4820000/980000*2=9.84...(commercial paper duration is twice that of eurodollar deposits underlying the eurodollar futures contracts)


问题：
1.为什么是SHORT  逻辑是什么？
2.为什么是用￥4820000 而不是￥5000000做对冲

谢谢~~