Morning Star Air $($China$).$ Morning Star Air, headquartered in Kunming, China, needs US $$23,000,000$ for one year to finance working capital. The airline has two alternatives for borrowing:

a$.$ Borrow US $$23,000,000$ in Eurodollars in London at $7\mathrm{.}20\%$ per annum

b$.$ Borrow HK$$176,952,800$ in Hong Kong at $7\mathrm{.}00\%$ per annum, and exchange these Hong Kong dollars at the present exchange rate of HK$$7\mathrm{.}6936/$US$ for U$.$S$.$ dollars.

At what ending exchange rate would Morning Star Air be indifferent between borrowing U$.$S$.$ dollars and borrowing Hong Kong dollars?

Morning Star Air would be indifferent between borrowing U$.$S$.$ dollars and borrowing Hong Kong dollars if the ending exchange rate is HK$ $\text{'}$US$$.($Round to four decimal places.$)$