Real-time foreign exchange quotation from 9: 00 a.m. to 4: 00 p.m. in the foreign exchange center is adopted to prevent the price difference between the commodity quotation of the East Exchange and the international commodity quotation when the exchange rate fluctuates greatly on that day. Adopt the method of following the real-time exchange rate quotation.

The calculation formula is as follows:

Assume that spot oil price is 2000 = international crude oil price x exchange rate of the day.

That is, the spot oil price is 2000 =50 USD/barrel x6. 1520=307.60 yuan/barrel. If it's 500 barrels,