wholesale jewelry packaging canada Please explain how this exchange rate is expressed, and you can't understand it.

jewelry findings wholesale suppliers canada 1.5180/90. This is a briefing that represents the buying and selling price of the bank. The number 1.5180 in front of the slope is the US dollar price when the bank buys the pound (the US dollar price when the customer sells the pound). The numbers after the slope need to be replaced. There are a few of it, which replace the last few of the previous numbers. For example, this example is 1.5180/90, and there are 2 places in the later/90. This is the US dollar price when the bank sells the pound (the US dollar price when the customer buys the pound). The difference between the two is 0.0010 for bank returns. Other categories are the same.
The expansion information:
. Exchange rate representation method:
The exchange rate refers to the ratio or price of the currency of one country to another country. There are two types of exchange rates: direct price method and indirect price method.
1. Direct price method: Direct price marking method refers to the price method expressed by the foreign currency of a certain unit to convert the cost of the national currency. For example, 100 US dollars = RMB 760; 100 Hong Kong dollars = RMB 106
2. Indirect price marking method: indirect price marking method refers to the standard method of pricing by the country's currency as the standard and converted into a foreign currency. Essence For example, the above example of RMB 100 = 12.65 US dollars; 100 yuan = 94.33 Hong Kong dollars is not essentially different, but the calculation method is only different. In international economic exchanges, most of the direct price method is adopted, and my country currently also adopts the direct price method source Beijing Antong School.
3. Classification of exchange rates: The exchange rate is classified by the license price: buying price: the price of the bank's purchase of foreign exchange; the price of the selling price: the price of the bank sells the foreign exchange That is, the sum of the purchase price and the sum of the price of the price is divided by 2.
. Which of the price methods are divided into:
The direct price method is used by most countries such as China. The foreign currency of 000 units) is the price method of a certain amount of domestic currency, such as $ 100/679.73. Under the direct price method, the amount of foreign currencies is fixed, and the amount of the country's currency changes with the changes in foreign currencies or domestic currencies.
The rise and fall of foreign exchange exchange rates is consistent with the increase and decrease of the amount of currency bids in China. The increase in the number of currency bids in China indicates that the exchange rate rises, indicating that the number of local currency that units can exchange for foreign currencies, foreign currency appreciation, and the depreciation of the country's currency; The decrease in the number of currency bids in the country indicates the decline in exchange rates, indicating that the currency of currencies in foreign units can be exchanged for the decrease in the local currency, the depreciation of foreign currencies, and the appreciation of the country's currency.