502๊ตฌํ˜• ์“ฐ๋‹ค 502x๋กœ ๊ฐˆ์•„ํƒˆ๊ฑฐ๊ฐ™์€๋ฐ 120 =>100์ด๋จ„ ์ฒด๊ฐ ํผ?