Sarah is now in the Singapore airport and has $7500$ Singapore dollars in her pocket. Sarah is next going to the Czech Republic and needs Czech Koruna. How many Koruna will she be able to exchange if the $"$in USD" Singapore Dollar exchange rate is $0\mathrm{.}770$ and the $"$in USD" Czech exchange rate is $0\mathrm{.}042.$ Which of the following answers comes closest to the amount of Czech Koruna rounded to the nearest Koruna.