The purchase price of a commodity is 80 yuan. If you want to obtain a 50% profit, how much should the selling price be?
一件商品进价80元，如果要获得50%的利润，售价应是多少元？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">80 * (3/2)</gadget>
<output>120</output>

<result>120</result>