1, say the deposit first:
As we all know, without leverage, a transaction needs 10W local currency, which is the previous currency. For example, GBP-US, US-Japan and GBP-day need 10W GBP, USD and GBP respectively. In the case of 200 leverage, it is 500 pounds, US dollars and British pounds. If converted into US dollars at the current exchange rate of British pounds against the US dollar, it will be 732+08,500,732.538+05.
Therefore, the local currency of the currency pair is the US dollar, that is, the US dollar comes first, the margin is 500, and the local currency is not the US dollar. Just multiply 500 local currency by the exchange rate.
2, integral value problem:
The nature of the contract is to change the former's local currency into the latter's currency. For example, the pound is 10 dollars after settlement, because it is directly converted into dollars. The US and Japan are converted into Japanese yen and then converted into US dollars by dividing 10 Japanese yen by the exchange rate. Now the exchange rate between the United States and Japan is 92.66, 10/92.66, which is 10.79.
To sum up, for currency pairs with US dollars in front, the margin must be an integer, and for currency pairs with US dollars behind, the fluctuation of point value must be an integer, and everything else needs to be converted by exchange rate.