1. The Defendant shall pay to the Plaintiff KRW 49,891,886 and the interest rate of KRW 15% per annum from February 18, 2017 to the day of complete payment.

In addition to the overall purport of the pleadings in the statement in Gap evidence Nos. 1 through 3, the plaintiff supplied ready-mixed to Eul corporation from January 10, 2014 to September 25, 2014. The defendant provided joint and several sureties with respect to the price of ready-mixed to the plaintiff of the above corporation, and the fact that the price of ready-mixed which is not paid to the plaintiff of the corporation Eul was 49,891,86 as of February 8, 2017.

Therefore, the Defendant is obligated to pay to the Plaintiff damages for delay calculated at the rate of 15% per annum from February 18, 2017 to the day of full payment after the delivery date of a copy of the instant complaint to the day of delivery of the copy of the instant complaint.

Thus, the plaintiff's claim of this case is accepted on the ground of the reasons.