As of April 1 day, a Korean enterprise is expected to obtain an export loan of $5 million on June 1 day. At this time, due to exchange rate changes, in order to reduce foreign exchange risk, US dollar futures were sold back at the end of June (1 contract = 50,000 US dollars, promissory note =1September). April 1 day spot exchange rate 1305 yuan/$ late June forward exchange rate 13 10/$. Assume that the spot exchange rate in June 1 day is 13 15 yuan/USD, and the forward exchange rate at the end of June is 1322 RMB/USD. Please answer the following questions:

How many losses and gains can be generated by not using the futures market?

How many export loans of $5 million can be sold by using the futures market? What is the real-time exchange rate at this time?

How many losses and gains will occur when using the futures market?