Honk, Inc., a U.S. corporation, purchases weight-lifting equipment for resale from HiDisu, a Japanese corporation, for 60

Question:

Honk, Inc., a U.S. corporation, purchases weight-lifting equipment for resale from HiDisu, a Japanese corporation, for 60 million yen. On the date of purchase, 80 yen is equal to $1 U.S. (¥80:$1). The purchase is made on December 15, 2015, with payment due in 90 days. Honk is a calendar year taxpayer. On December 31, 2015, the foreign exchange rate is ¥84:$1.

On February 2, 2016, the invoice is paid when the exchange rate is ¥85:$1. What amount of foreign currency gain or loss, if any, must Honk recognize for 2015 as a result of this transaction? For 2016?

Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...