Converting currency rates is often done using financial software or specialized currency trading platforms. However, if you want to manually convert exchange rates, you can use simple formulas.
For example, let's assume the exchange rate between two currencies A and B is \(1 A = 0.85 B\). If you want to convert an amount from A to B, you can use the following formula:
\[ \text{Amount in B} = \text{Amount in A} \times 0.85 \]
This formula involves multiplying the amount in A by the exchange rate (0.85 in this case). It's multiplied because the conversion rate is reciprocal to \(1 A = 0.85 B\).
For more complex currency conversions, you can use similar formulas, but you need to pay attention to the reciprocal conversion rate of each unit as well.