The currency converter simply translates a value from one currency to another. For example,
it shows you the current equivalent of $10,000 in EUR.
The calculator uses live prices, and will update on each market tick.
Depending on which currencies are selected, the calculator may either be able to
do a direct conversion (e.g. between USD and EUR using EUR/USD), or it may
need to triangulate via the US dollar (e.g. converting CAD to GBP by using USD/CAD and GBP/USD).