Bank of China conversion price: the same as the benchmark price. This is the reference price for financial conversion in foreign exchange business. Even if the exchange rate changes, the conversion basis remains unchanged. This began to calculate the quotation of the Bank of China.

Bid price: the price at which China Bank mainly buys foreign currency from customers.

Spot purchase price: the funds remitted from abroad to domestic accounts by customers and the funds on overseas bills brought back from abroad are sold to banks and exchanged for RMB quotations paid by banks.

Buying price of cash: the customer takes the cash to the bank, sells it to the bank, and changes it into the RMB quotation of the bank. Generally lower than the spot purchase price.

Selling price: the bank is the main body of the transaction, the bank sells its own foreign currency, and the customer buys the foreign exchange price in RMB. Please note that foreign currency purchased from the bank is regarded as cash. If there is no cash withdrawal, it is cash. Once it is taken out of the account, it becomes cash.

Buy foreign exchange at the selling price. Divide 4200 by the selling price to get the amount.