Hana card travel bucket

There is an error in the commission calculation method for Hana Card coupons.

Policy: 3.85% of the final payment amount should be paid to Hana Card.

Example
(As-is) A commission of 2,701 won is calculated as 3.85% of 70,156 won, which includes the final payment amount of 69,156 won plus 1,000 won of Ohmyhotel coupon cost.
(To-be) The commission should be calculated as 3.85% of the final payment amount of 69,156 won, which is 2,663 won.