Your math seems to be not very good. This calculation problem is very simple. You only need to multiply the RMB price of the euro by 550 to get the RMB unit price, and then divide the RMB unit price by the RMB price of the US dollar to get USD 796+08.

In actual business, the foreign quotation generally does not adopt the buying price and selling price of RMB, but usually adopts the spot foreign exchange middle price.