store is willing to sell a certain product at a price not lower than 120% of the purchase price. In order to obtain greater profits, the boss marked the price 80% higher than the purchase price. If Mr. Wang wants to buy a certain product with a price tag of 600 yuan, the boss will sell it if the price is reduced by a maximum of 600 yuan.
某商店以不低于进价的120%的价格才肯出售某种商品．为获取更大利润，老板以高出进价的80%的价格标价．若王老师想买下标价为600元的某种商品，最多降低多少元，老板才肯出售．
<gadget id="calculator">600 / 1.8</gadget>
<output>333.333333</output>

<gadget id="calculator">120 / 100</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">333.333333 * (6/5)</gadget>
<output>400</output>

<gadget id="calculator">600 - 400</gadget>
<output>200</output>

<result>200</result>