The $$/$ exchange rate is $1=$ $$1\mathrm{.}45,$ and the $/$SFr exchange rate is SFr $1=0\mathrm{.}71.$ What is the SFr$/$$ exchange rate?

Suppose the direct quote for sterling in New York is $1\mathrm{.}91105.$

a$.$ How much would $500,000$ cost in New York?

b$.$ What is the direct quote for dollars in London?