A bank in London, Ontario charges $2\mathrm{.}00\%$ commission to buy and sell currencies. Assume that the current exchange rate is US$$1=$ C$$1\mathrm{.}3829.$

a$.$ How many Canadian dollars will you receive from the bank if you sell US$$1,315?$

Round to the nearest cent

b$.$ How much commission will you pay the bank for this transaction?