First of all, your transaction should be a direct matching transaction of foreign exchange contracts, so the units are all contracts and the quantity is the contract quantity. The unit contract between the United States and Japan should be 100000. If you understand this piece, then you should be able to understand the following explanation. If not, this question is more professional to you, so I suggest you skip it.

Figure 1 shows the market depth. 500,000 and 5,000,000 are the current contracts that liquidity can provide. Conventionally, if 100K is a hand, then 500K is 5 hands and 5M is 50 hands.

Figure 2. Market order refers to market transactions. That is, what is the price of liquidity in the market, and choose the best price to clinch a deal.

Figure 3: You said the market value was on the high side. What do you mean by that? I think it's appropriate. You made a 2M contract, but the price liquidity at that time was only 1m, so the remaining 1m contracts should not be sold at that price. Look at the average price and you will know the details. The cost basis should be the so-called spread, but I can't see your bid and asking price when you clinch the deal, so I can't calculate the specific figures.

I can only help you here. Novices still have some conceptual difficulties in understanding contract transactions. It is suggested to choose MT4 trading software for foreign exchange trading first, and then upgrade after the theoretical knowledge of foreign exchange is established.

Code word is not easy, hope to adopt. thank you