Moscow to Tokyo. After spending a week in Moscow you get an email from your friend in Japan. He can get you a very good deal on a plane ticket and wants you to meet him in Tokyo next week to continue your post$-$graduation celebratory trip. You have $448,000$ Russian rubles $($RUB$)$ left in your money pouch. In preparation for the trip you want to exchange your Russian rubles for Japanese yen $($JPY$)$ so you get the following quotes:

Spot rate on the ruble$/$dollar cross rate:

Spot rate on the yen$/$dollar cross rate:

RUB $31\mathrm{.}52=$ USD $1\mathrm{.}00$

$JPY84\mathrm{.}59=$ USD $1\mathrm{.}00$

a$.$ What is the Russian ruble$/$yen cross rate?

b$.$ How many Japanese yen will you obtain for your Russian rubles?