The method comprises the steps of: making a recommendation code registration for each sales product by assigning the sales product sold to an arbitrary member to an identification code; registering by one-to-one matching one identification code with a recommendation code of a different identification code, and then enabling a number of registration, wherein the number of the identification code entered for each group is limited; differentiating profits for each group by forming a number of the group with a predetermined number, wherein the group is configured to be sequentially leveled with a group form a low to high profits; and moving a level of the group sequentially when the most significant identification code of an initial group is only registered as a recommendation code of a different identification code, thereby a loss does not occur as a company distributes profits based on an amount of sales after selling products, concentrating in profits on a portion of member is prohibit...
영어문법, 수능영어, 영어번역, 소비하고 사는 이야기, 가끔 고등내신영어 자료도 만듦, 중고딩 영어 관련 질답 환영
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