The rent, etc. is KRW 2,148,00, KRW 70, KRW 70,843,620, KRW 548,90, and KRW 620, which is the sum of KRW 80,764,620, from the date of lease to March 31, 2015, for materials that have not been repaid at rent of KRW 548,90 for the materials that have not been refunded, and KRW 7,773,00, which is the sum of KRW 80,764,620.

The defendant is obligated to pay to the plaintiff 75,950,620 won remaining after deducting the 4,814,000 won already paid from the above amount, and damages for delay.

2. Comprehensively taking account of the purport of the entire pleadings as to the statements in Gap evidence Nos. 2 and 7, the fact that the plaintiff exported and leased building materials to the defendant from Sep. 7, 2009 to Dec. 16, 2009, the defendant returned some of the building materials to the plaintiff on Oct. 6, 2009 to Jan. 5, 2010, the fact that the sum of the rent for the returned materials is 548,900, the basic fee for the building materials leased to the defendant was 2,148,00, the sum of the rent for the building materials leased to the defendant was 2,773,000, the compensation for the materials not returned to the plaintiff was 7,773,000, and the fact that the plaintiff received KRW 4,814,000 from the defendant.

Meanwhile, the Plaintiff sought rent of KRW 70,294,720 for a period exceeding five years from the lease date to March 31, 2015. However, the Plaintiff appears to be unable to claim a rent in addition to seeking compensation for the unpaid materials after a considerable period of time that the Plaintiff would have terminated a rental contract after notifying the Defendant of the return of the materials. However, it is reasonable to view that the considerable period of time is one year from the date of the lease of the materials.

The calculation details are as follows, and the plaintiff's assertion seeking payment of excess amounts is as follows.