The defendant's 122,50 U.S. dollars to the plaintiff and 6% per annum from February 1, 2017 to December 20, 2019.

According to the purport of Gap evidence No. 1 and all the pleadings, it is recognized that the plaintiff issued a promissory note with the face value of US$122,500 and the due date as of January 31, 2017 from the defendant on October 28, 2016, and that a notary public C office was issued with the No. 320 on October 28, 2016.

According to the above facts, the defendant is obligated to pay to the plaintiff 122,50 US dollars and the damages for delay calculated at the rate of 6% per annum prescribed in the Commercial Act from February 1, 2017 to December 20, 2019, which is the delivery date of a copy of the complaint of this case from February 1, 2017, and 12% per annum prescribed in the Act on Special Cases concerning Expedition, etc. of Legal Proceedings from the next day to the day of full payment.

Therefore, the plaintiff's claim of this case is reasonable, and it is so decided as per Disposition.